Quality Tour Guide Audio System & Wireless Tour Guide System Factory

When foreign customers first ask about the wireless guide device, nine out of ten times they will ask: "Can it be customized?" After all, the requirements for different scenarios vary greatly - in small European museums, the exhibits are crowded and tightly arranged, requiring precise point-touch guidance; in the Middle East, exhibitions are hot and dusty, and Arabic language support is needed; in Southeast Asia, factory visits require equipment that can withstand dust and machine noise. General models can indeed be used, but it always feels a bit lacking. Either the functions are not usable, or the key requirements are not met.   Ⅰ.Why do foreign customers insist on customization? These  points cannot be solved by general models   Not simply changing the appearance is called customization. When foreign customers ask for customization, it essentially means that general models cannot solve these scene pain points. There are three main situations.   1. Special scene adaptation: crowded exhibits, messy environment, general models cannot handle it   In many museums and art galleries, the exhibits are placed very closely, with adjacent points less than 3 meters apart. General model guide devices are prone to "confusion" when guiding, walking to the A exhibit but playing the B exhibit's guidance; in the Middle East's outdoor exhibitions, hot sun exposure and dust are present, and ordinary equipment either suddenly loses battery life or the microphone gets dusty, making the sound indistinct. These situations can only be solved by targeted customization.   2.Multi-language requirements: small language coverage + sound color restoration, general models cannot do it   International exhibitions, multinational enterprise receptions often require multilingual guidance. General models mostly only support English and French, which are mainstream languages. There are no small languages like Thai, Vietnamese, or Arabic at all. More importantly, the pronunciation characteristics of different languages are different, and general models do not optimize the sound quality algorithm, making the sound sound very stiff and lacking that flavor.   Ⅱ.What can Yingmi customize? It can meet from basic to deep requirements   Yingmi's customization is not "half-hearted". From appearance to functions, software to hardware, it can be customized. Whether it's simply printing a logo or complex function development, it can be handled. The core customization directions mainly include these three:   1. Core customization: functions + scenarios, precisely solve pain points   This is the direction that foreign customers love the most. Yingmi will optimize and even add functions based on the scene requirements, making the device fully compatible with the usage environment.   For museums and art galleries with dense exhibits, Yingmi will adjust the "automatic sensing + NFC point touch" of the C7 guide device more precisely - for example, reducing the sensing distance to avoid interference, and customizing the storage capacity of the explanations based on the number of exhibits. It is also sufficient for large exhibition halls; for exhibitions or factories in the Middle East with high temperatures and dust, the E8 guide device will be treated for dust resistance and heat resistance, and the PMU safety intelligent lithium battery power management technology will be optimized. In extreme environments, the battery life and sound quality will also be stable.   There are also special function customizations, such as "two-way interaction" required for multinational enterprise receptions, a two-way guide device 008B will be added with multiple-channel grouping, allowing different departments' teams to talk separately without interfering; for large international conferences requiring multilingual synchronization, a "wireless simultaneous interpretation" will be customized, combined with the HM8.0 multilingual sharing platform, so that different languages do not get confused when speaking.   2.Key customization: languages + sound quality, adapt to international scenarios   Multi-language customization is one of the core requirements of foreign customers. Yingmi not only covers mainstream languages but also can deeply customize small languages. As long as the customer provides the corresponding guidance audio or text, Yingmi will use AI lossless original sound processing, optimize the sound quality algorithm, and restore the language characteristics - such as the tone of Arabic or the final sound of Thai, it sounds like the native speaker speaking face-to-face.   For example, the M7 self-service guide device customized for the Xiangkun Temple scenic area in Vientiane, Laos, specifically added bilingual options in Lao and English, and strengthened the SOC embedded integrated digital noise reduction technology, so that tourists can hear clearly in noisy environments. The equipment customized for European museums includes not only English, French, German, and Spanish, but also Hungarian and Polish, which perfectly cater to local tourists.   3.Deep customization: Hardware + System, Meeting Customer's Exclusive Requirements   If the customer has special hardware or system requirements, Yingmi, relying on its own SMT assembly factory and R&D team, can deeply customize from chips to systems. For example, if the customer wants to connect with their own scenic area management system, Yingmi will open data interfaces, and the usage duration and language selection of the guide machines will be synchronized in real time; if they want a special charging method, they can customize a wireless charging module, or adjust the capacity of the charging box (30-50 units available), and also add an ultraviolet disinfection function, which is convenient and hygienic.   III. Are the customized equipment reliable? Yingmi proves it with technology and cases   Many foreign customers are worried about the "unreliability" and "long delivery time" of customized products, but Yingmi's technical strength and case accumulation can completely dispel these concerns.   1. Production in own factory + multiple layers of inspection, no compromise on customized quality   Yingmi invested in the SMT assembly factory Hefei Suicheng Electronics in 2018. It produces PCBA itself, and the entire process from chip selection to hardware assembly is controllable. Unlike many brands that rely on outsourcing, there are often compatibility issues during customization.   Each customized device must pass five tests: high temperature, low temperature, vibration, sound quality, and battery life. None of them can be omitted. Moreover, it complies with EU CE and RoHS certification standards, and is suitable for export worldwide.   2.Fast delivery time + full communication, no delay in customization efficiency   Yingmi has a dedicated customization team. They respond within 90 seconds before sales and will repeatedly confirm the customer's requirements and provide a detailed customization plan. Basic customization (such as printing logos, changing colors) can be delivered within 7-10 days, and deep customization (such as developing functions, optimizing languages) can also be completed within 30-45 days, which is 20% shorter than the industry average cycle.   There is an exclusive project manager for the entire process, and customers can provide any adjustment requests at any time and receive feedback for modification without going through complex procedures.   IV. Must-read for foreign customers' customization: Don't worry about these two details   When foreign customers customize, in addition to the core requirements, there are two details they particularly care about. Yingmi has already adapted them in advance.   First, the voltage and certifications are compatible worldwide. All customized equipment's charging modules support a wide voltage range of 100V-240V. Whether it's Europe, America, or Southeast Asia, it can be used directly without the need for an additional voltage converter; the default passes international certifications such as EU CE and RoHS, and if local special certifications are required, Yingmi can also assist in handling them.   Second, there is a guarantee for after-sales service, and cross-border repairs are not troublesome. Customized equipment and regular equipment enjoy the same 9G full life cycle service: before sales, samples can be tested for free, during large projects, on-site investigations can be conducted, and after-sales provide free technical support and lifetime maintenance. Even in foreign countries, most problems can be solved remotely, and if repair is needed, it can be sent back to the factory within 10 working days and repaired and sent back.   Conclusion   Customized wireless narrators are not at all a luxury item; for foreign customers, they are a necessity - only when they are precisely adapted to their own scenarios, languages, and brand requirements can they truly enhance the reception efficiency and experience. Yingmi has turned "customization" into its core advantage by relying on its own factory, comprehensive customization plans, strict quality control, and rich export experience.   There is no need to worry about "can it be customized" anymore; what should be more concerned about is "how to customize to suit oneself best". Yingmi will provide an exclusive customization plan based on your specific scenario, so that each narrator can precisely solve your pain points. This is also the core reason why it can export globally and receive unanimous praise.   FAQ   Q1: What is the minimum order quantity for the Yingmi wireless explainer? Can small batches be customized? A1: There is no minimum order quantity for basic customization (logo, color, additional languages). You can place an order for 10 units; for deep customization (function development, hardware adjustment), the minimum order quantity is 50 units. If there are special requirements, the minimum order quantity can be negotiated and reduced.   Q2: How long does the customization process take? Can it be expedited if I need it urgently? A2: Basic customization takes 7-10 days to deliver; deep customization takes 30-45 days. Expedited delivery is supported. Basic customization can be delivered within 3 days, and deep customization within 20 days. A small additional fee for expedited service is required. Specific details can be asked from the project manager.   Q3: Can the customized equipment still enjoy the warranty? How long is the warranty period? A3: Yes! Customized equipment and regular equipment have the same warranty - core components (chip, battery, microphone) are guaranteed for 2 years, the entire machine is guaranteed for 1 year, and lifetime free maintenance is available. The after-sales service is not affected by customization. About us   HEFEI HUMANTEK. CO., LTD. has been dedicated to the research and development and production of tour guide devices for 18 years. Our company mainly deals in team tour guide systems, self-service audio guide systems, multi-channel tour guide systems, and intelligent presentation systems. As an innovative enterprise, Yingmi Technology holds multiple core patents and technical certifications, and its strength is highly recognized. The company possesses H4 national patent core technology, a 7S product guarantee system, and a 9G service system throughout the entire life cycle, ensuring zero accidents from the first unit to one million units, all for the reliable delivery of products and services to customers! The company is committed to creating industry-leading intelligent tour guide solutions through a strategy of integrating online and offline as well as domestic and international interaction, and promoting a comprehensive upgrade of cultural and tourism display experiences.

When preparing for international conferences and industry summits, foreign clients often struggle with one question: Can a wireless presentation device be used in a meeting environment? After all, a meeting is different from scenic spots or factories, and it has more stringent requirements for sound quality, interference resistance, and multi-team coordination - just think about it, in a high-end international conference, dozens or even hundreds of participants are scattered throughout the venue, and the speaker's voice is drowned out by air conditioner sounds and footsteps; multiple delegations visiting different sections simultaneously cause signal interference; when simultaneous multilingual interpretation is needed, sound distortion leads to information transmission errors, all of which can lower the conference level.   Ⅰ.Using a wireless presentation device in a meeting environment, these core pain points must be addressed   The complexity of the meeting environment poses higher requirements for the wireless presentation device. Not just any presentation device can handle it; it must precisely solve these 4 pain points, otherwise it will only cause trouble.   1. Multiple teams working simultaneously without interference, no chaos in meeting reception   In large-scale meetings, there are often situations where multiple delegations visit different sections or booths simultaneously. If the presentation device's signals interfere with each other, the content of Group A will be carried over to Group B, and the scene will be particularly chaotic. This requires the presentation device to have enough independent channels and be able to precisely resist interference.   2.Clear details in noisy environments, sound quality must not be compromised   The noise in the venue, such as air conditioner sounds, people's footsteps, and electronic equipment noises, will affect the auditory experience. Especially in international conferences, even a missed word by the speaker can affect understanding. A good presentation device must be able to precisely reduce noise and not damage the details of the human voice.   3.Multi-language compatibility, meeting requirements must be met   When preparing international conferences for foreign clients, they often involve multilingual presentations. If there is no corresponding sound quality optimization, the rolled tongue sounds of English and the consecutive pronunciation of French will become blurred, or even "muddled", affecting communication effectiveness.   4.Portable and easy to manage, suitable for the efficient rhythm of the meeting   The meeting reception rhythm is fast, and the presentation device must be lightweight, comfortable for participants to wear; at the same time, it must be convenient for batch charging and storage, and staff should not spend a lot of time managing the equipment, because no one wants to check the battery level of the equipment one by one before the meeting starts.   Ⅱ.Why can Yingmi be suitable for meeting environments? Dual guarantees of technology and product   The core reason why Yingmi can be chosen for high-level meetings such as the SCO Supreme Judicial Council Meeting and the International Museum High-level Forum is that it precisely matches the requirements of the meeting environment in terms of technology and product. It is not just a "general model" modified and used.   1. Core technology: Solving the problems of meeting environments   The three core technologies of Yingmi precisely hit the pain points of meeting environments. First, the SOC embedded integrated digital filtering and noise reduction technology, which is the "guardian" of meeting sound quality - it can precisely lock in the 200Hz-3kHz human voice core frequency band, filter out the low-frequency noise of air conditioners and the high-frequency noises of people's footsteps, and only retain clear presentation sounds. It's like installing a "soundproof mask" for everyone in the noisy venue, even sitting in the back row, you can still hear every professional term of the speaker clearly.   Second, 4GFSK signal modulation technology, combined with a 200k ultra-small channel bandwidth, perfectly solves the problem of multiple team interference. This technology can achieve 100 independent channels, even if 100 groups of delegations are moving around in the venue at the same time, they can "listen to their own" without mutual interference. During the SCO meeting, multiple countries' delegations were visiting simultaneously, and the Yingmi equipment had zero interference throughout the process, which is the best proof.   Finally, PMU secure intelligent lithium battery power management technology, ensuring the entire meeting's power supply. The meetings often last for a whole day or even several days. The transmitter of the Yingmi device can have a stable battery life of over 12-15 hours, and the receiver can last for more than 8 hours. This is sufficient to handle an entire day of meetings. When combined with a dedicated charging box, 30-50 devices can be fully charged in just 2-3 hours. Staff can charge the devices the night before and use them with peace of mind the next day.   2.Targeted products: There are compatible models for different conference scenarios   Yingmi has launched multiple compatible products for different conference scales and requirements, eliminating the need for customers to "force themselves to make do".   For high-end international conferences, the E8 all-in-one interpreter is the right choice. This device weighs only 16 grams and has an integrated design that is particularly lightweight, with participants hardly feeling it when wearing it; the appearance is fashionable and high-end, and it can enhance the reception level at the conference site. It supports dual main and secondary speaking functions, making it suitable for two main speakers to take turns speaking; it can also connect to audio playback devices to play pre-recorded explanations, reducing the burden on the main speakers. The highest judicial council meeting of the Shanghai Cooperation Organization used this model, and the meeting lasted for a whole day. The device's sound quality was stable, the battery life was online, and it was highly recognized by the organizers.   For meetings that require interactive communication, such as seminars and roundtable forums, the 008B two-way interpreter is the preferred choice. It is currently the most advanced wireless team two-way interpretation system on the market. Participants can ask questions within the channel, and the main speakers can answer them in real time, ensuring that everyone can hear clearly. This perfectly solves the problem of "asking questions by shouting" and "inability to hear from the back row" in traditional conferences. It is suitable for group discussion sessions in internal enterprise seminars and industry summits, making interaction more efficient.   III. Yingmi's export compatibility advantages   In addition to being compatible with conference scenarios, Yingmi has made many detailed optimizations for foreign customers to make the purchase more convenient. First, all devices have passed EU CE certification and RoHS environmental protection certification, and there is no problem when exported to most countries and regions in Europe, Southeast Asia, etc. Secondly, the charging equipment supports a wide voltage input of 100V-240V, and there is no need to buy a voltage converter; it can be used directly when received. Finally, Yingmi has a complete 9G full life cycle service. Pre-sales are responded to within 90 seconds, and 1000+ real conference case references are provided. After-sales has professional technical support, and even if in a foreign country, problems can be solved promptly. Conclusion   For foreign customers, a wireless presentation device for meetings is not a matter of "whether it can be used", but rather "it's only good to use if it's chosen correctly". Yingmi, with its core technology optimized for meeting scenarios, multiple compatible products, and practical validations in high-end meetings such as the SCO meetings and international museum forums, can fully meet the needs of different scale and type of meetings.   No matter whether you are preparing for a high-end international conference, an industry exhibition, or an internal enterprise seminar, Yingmi has corresponding solutions. Moreover, Yingmi equipment complies with international certification standards, is compatible with global voltages, and has guaranteed after-sales service. After foreign customers purchase it, they don't need to worry at all. After all, the core of meeting reception is "efficient information transmission", and choosing a reliable wireless presentation device can double the meeting level and communication efficiency.   FAQ   Q1: Which model of the interpreter from Yingmi is the most suitable for high-end international conferences? A1: The E8 all-in-one interpreter is the best choice. It weighs only 16 grams, is stylish and high-end, and is compatible with the tone of high-end conferences; it supports both main and secondary speaking and audio playback, and the SOC noise reduction technology ensures the sound quality, and the 4GFSK technology prevents interference, fully meeting the core requirements of international conferences.   Q2: If multiple delegations are present at the conference site simultaneously, will there be signal interference? A2: No. Yingmi equipment uses 4GFSK signal modulation technology and a 200k ultra-small channel bandwidth, which can provide 100 independent channels. Even if 100 groups of delegations are using it simultaneously, they can achieve no interference and independent listening.   Q3: The conference lasts all day. Is the battery life of the Yingmi interpreter sufficient? Do I need to recharge halfway? A3: It is completely sufficient. No recharging is needed. The Yingmi E8 transmitter has a battery life of ≥ 15 hours and the receiver has a battery life of ≥ 8 hours; the 008A/008B transmitter and receiver have a battery life of ≥ 12 hours each, and can easily last through the entire day of the conference. About us   HEFEI HUMANTEK. CO., LTD. has been dedicated to the research and development and production of tour guide devices for 18 years. Our company mainly deals in team tour guide systems, self-service audio guide systems, multi-channel tour guide systems, and intelligent presentation systems. As an innovative enterprise, Yingmi Technology holds multiple core patents and technical certifications, and its strength is highly recognized. The company possesses H4 national patent core technology, a 7S product guarantee system, and a 9G service system throughout the entire life cycle, ensuring zero accidents from the first unit to one million units, all for the reliable delivery of products and services to customers! The company is committed to creating industry-leading intelligent tour guide solutions through a strategy of integrating online and offline as well as domestic and international interaction, and promoting a comprehensive upgrade of cultural and tourism display experiences.

When foreign customers purchase wireless audio guide device, apart from stable signals and long battery life, what they are most concerned about is the sound quality - think about it, during scenic area tours, the tour guide's explanations are muffled by the crowd noise; during factory visits, the machine's roaring makes the details of the process hard to hear; at international conferences, multilingual explanations mixed with background noise make communication directly suffer a setback. In fact, the sound quality of the wireless narrator is not reliable just because the merchant claims it to be "high-definition and true fidelity". The core is "clear in noisy environments, realistic human voice reproduction, and no mistakes in multi-scenario adaptation".   Ⅰ.Is the sound quality good? The core point that international customers care about   Many people think that "good sound quality means loud sound", which is completely a misunderstanding. For foreign customers, the standard of good sound quality is three points: first, it can be heard clearly in different scenarios; second, noise reduction does not damage the human voice; third, multilingual explanations can also restore the true sound color. After all, what you buy is for communication, not just "making sounds".   1. Scene adaptation is the key, and it must also be clear in noisy environments   The noise environments in different scenarios vary greatly: in scenic areas, it is the high-frequency noise of the crowd; in factories, it is the low-frequency roaring of machines; at international exhibitions, it is the mixed noise of background music and people's conversations. A good narrator device must be able to precisely deal with different noises, rather than "one-size-fits-all" noise reduction.   Yingmi particularly understands this principle. The sound quality solutions of its different products are all designed specifically. For example, the K8 narrator device for factories, it focuses on strengthening the low-frequency noise filtering; the R8 narrator device for scenic areas, it specifically optimizes the high-frequency human voice capture; the E8 narrator device for international exhibitions, it also takes into account the multi-language sound color restoration, no matter which scenario, it can make the audience hear every detail clearly.   2.Noise reduction without damaging the human voice, this is the true high-definition   Many cheap narrator devices on the market, the so-called "high-definition" is to amplify the volume, even amplifying the noise and human voice together, making it sound more irritating; some products have excessive noise reduction, filtering out the intonation and details of the explanation, making it sound particularly stiff. True good sound quality is "precise noise reduction + true human voice fidelity" without compromise.   Yingmi's equipment will not have this problem. It relies on its exclusive SOC embedded integrated digital noise reduction technology, which can precisely lock on the 200Hz-3kHz human voice frequency band - this frequency band is the core range of human speech, only filtering out the noise outside this frequency band, without damaging the human voice details. Just like the German museum inspection team's experience: "The noise reduction effect is just right, it can both hear the explanation clearly and retain the speaker's intonation, very natural."   3.Multi-language adaptation, realistic sound color restoration   For international customers, multilingual explanations are common - the pronunciation characteristics of English, French, and Spanish are different, and poor sound quality equipment will make the sound color of different languages become blurred, even causing "confusion of flavors". Good narrator devices must be able to precisely restore the pronunciation details of different languages.   Yingmi is equipped with the HM8.0 multilingual sharing platform and has made targeted sound color optimization. Whether it is the rolled tongue sound of English, the consecutive pronunciation of French, or the stress of Spanish, it can clearly restore. Before serving the high-level forum of international museums, when there were 6 languages being explained simultaneously, the audience could precisely distinguish, and there was never a situation of unclear sound color.   Ⅱ.Yingmi's sound quality strength: There are tricks in every link from technology to hardware   The good sound quality of Yingmi is not supported by a single technology, but is controlled throughout the entire chain from core technology, hardware selection to quality control. Every link is centered around "clear, true fidelity, and anti-interference", which is also the reason why it can serve high-end scenarios such as the SCO conference and international museum forums.   1. Core technology: SOC noise reduction + AI fidelity, dual guarantees for good sound quality   The core of Yingmi's sound quality lies in the SOC embedded integrated digital filtering and noise reduction technology, combined with AI lossless original sound fidelity processing. In simple terms, these two technologies are "intelligent filter + sound color restorer": The SOC technology precisely filters out noise, whether it is the high-frequency noise in scenic areas or the low-frequency rumbling in factories, and can efficiently eliminate it; The AI fidelity technology then optimizes the human voice, restoring the true sound color of the speaker, without the appearance of "electronic sound" or "distorted sound".   Take the Yingmi E8 integrated tour guide device as an example. After adopting this technology, in an 85-decibel noisy environment (equivalent to the noise of a busy street), the clarity of the guiding sound can still maintain over 90%. The Shanghai Cooperation Organization's highest judicial council used it for multilingual explanations, and the speakers' tone and detailed expressions could be clearly conveyed to every listener, receiving high recognition from the organizers.   2.Hardware selection: Ensuring pure sound quality from the source   Good technology also requires good hardware support. Yingmi has its own SMT surface mount technology factory, with 4 automated production lines, strictly controlling from microphones to chips. For example, the lapel microphone uses a directional pickup model, which can accurately capture the speaker's voice and reduce the mixing of surrounding environmental noise; The core chip is selected from the industry's high-quality models, which can reduce the electronic noise of the equipment, making the sound quality purer.   Also, the Yingmi R8 ear-mounted audio guide device adopts Ergo ergonomic non-in-the-ear design, not only providing comfortable wearing, but also allowing the sound to naturally enter the ears through a reasonable sound output angle, avoiding the "stuffy pain" and sound distortion of in-ear headphones. A French customer reported: "After wearing it for a long time, the ears do not hurt, and the sound is particularly clear, and the tourists are very satisfied."   Ⅲ.Must-see for foreign customers: Additional advantages of Yingmi's sound quality for international scenarios   When foreign customers purchase, in addition to good sound quality, they also need to worry about whether the equipment can be adapted to the local environment and whether it complies with international standards. Yingmi has already made preparations in these aspects, making it easier for foreign customers to purchase.   1. Complies with international certifications, no pressure for global use   All Yingmi devices have passed the EU CE certification and RoHS environmental protection certification, and the technical parameters related to sound quality also comply with the standards of most countries in the world. For example, equipment exported to Europe will adjust the sound quality algorithm according to the local electromagnetic environment to ensure clear sound quality in complex signal environments; For equipment exported to the Middle East, the microphone dust-proof design has been optimized for high-temperature and sand-dust environments, avoiding dust entering and affecting the pickup effect, thereby ensuring stable sound quality.   2.Rich export experience, adaptable to diverse international scenarios   Yingmi has been engaged in export business since 2009, with products exported to dozens of countries such as France, Germany, the United Kingdom, Malaysia, and Indonesia, accumulating rich experience in adapting to international scenarios. For example, for the multilingual needs of large-scale exhibitions in Europe, the sound quality algorithm has been optimized to ensure that the voices of different languages can be accurately restored; For the high-temperature and high-humidity environment of scenic spots in Southeast Asia, the device's heat dissipation and moisture-proof performance have been upgraded to avoid sound distortion caused by environmental issues.   3.Supports multilingual customization, meeting local usage needs   Not only can Yingmi restore multilingual sound quality, but it also supports multilingual voice customization services. Foreign customers can import different languages of explanations in advance, and the equipment will precisely match the sound quality parameters of the corresponding language to ensure the most accurate restoration of the true sound color. For example, the equipment customized for Japanese customers will specifically optimize the pronunciation details of Japanese; The equipment customized for Arabic customers will adapt to the pitch characteristics of Arabic, making the listeners feel more comfortable.   Conclusion   For foreign customers, the sound quality of the wireless guide device is not "mysterious" but a tangible communication guarantee - whether one can hear clearly in noisy environments, whether it can reproduce real human voices, and whether it can meet multilingual requirements - these are the key factors. Yingmi, with 18 years of industry experience, has turned "good sound quality" into its core competitiveness through SOC noise reduction technology, AI fidelity processing, strict quality control procedures, and a wealth of international cases.   Whether you are conducting scenic area tours, factory receptions, or international conferences and museum explanations, Yingmi has corresponding sound quality solutions. Moreover, Yingmi's equipment complies with international certification standards, is suitable for different global scenarios, and has guaranteed after-sales service. After foreign customers purchase, they don't need to worry at all. After all, when choosing a guide device, having clear sound quality enables true efficient communication.   FAQ   Q1: Will the simultaneous use of Yingmi devices by multiple teams affect the sound quality or cause crosstalk? A2: No. Yingmi employs 4GFSK modulation technology and a 200k ultra-small channel bandwidth. Multiple teams can switch to different channels without interference between them; moreover, the sound quality algorithm specifically filters out crosstalk noise, so even if multiple devices are working simultaneously, their sound quality clarity will not be affected.   Q2: What language sound quality optimizations does the Yingmi interpreter support? Can customizations for minor languages be made? A2: By default, it supports sound quality optimizations for 16 major languages such as English, French, German, Spanish, Japanese, and Korean. Customizations for minor languages are also available. As long as the corresponding language samples are provided, the sound quality algorithm can be specifically optimized to restore the true sound color.   Q3: Will the sound quality deteriorate over time with the use of the device? How to handle sound quality issues? A3: Under normal use, the sound quality will not significantly deteriorate. Yingmi devices enjoy a 1-year free warranty, with the core components of sound quality (microphones, SOC chips) enjoying a 2-year warranty. If there are sound quality issues, you can contact the after-sales service for remote diagnosis. If repair is required, the device will be sent back within 10 working days and repaired. If the time limit is exceeded, a backup device can be provided. About us   HEFEI HUMANTEK. CO., LTD. has been dedicated to the research and development and production of tour guide devices for 18 years. Our company mainly deals in team tour guide systems, self-service audio guide systems, multi-channel tour guide systems, and intelligent presentation systems. As an innovative enterprise, Yingmi Technology holds multiple core patents and technical certifications, and its strength is highly recognized. The company possesses H4 national patent core technology, a 7S product guarantee system, and a 9G service system throughout the entire life cycle, ensuring zero accidents from the first unit to one million units, all for the reliable delivery of products and services to customers! The company is committed to creating industry-leading intelligent tour guide solutions through a strategy of integrating online and offline as well as domestic and international interaction, and promoting a comprehensive upgrade of cultural and tourism display experiences.

When foreign customers purchase wireless audio guides, apart from stable signal and good noise reduction, what they are most concerned about is battery life - when leading a tour in a scenic area halfway through, the device suddenly pops up with "low battery"; when visiting a factory at a key process, the receiver runs out of power and stops working completely, missing out on all the key points; when attending an international exhibition for a whole day, constantly searching for power sources for charging not only delays things but also reduces the reception level. To be honest, the battery life of the wireless audio guide is not reliable just because the merchant claims "battery life of 24 hours". The core lies in three points: whether it can last long enough during actual use, whether charging is convenient, and whether it can match one's own usage scenario.   Ⅰ.Is the battery life sufficient? Focus on two key points, which are what foreign customers care about   Many people think that "the longer the battery life, the better", but that's not the case. For foreign customers, battery life doesn't need to blindly pursue length; first, just meet two needs, rather than simply focusing on numbers.   1. Don't pursue ultra-long battery life, it should be suitable for the scenario   The requirements for battery life vary greatly in different scenarios: for scenic area guiding, it takes 8-10 hours for a full day's run; for factory visits, it's usually 4-6 hours; for international exhibitions, it may be over 12 hours. If choosing a device with a battery life of 20 hours for the factory, it looks impressive, but in reality, the large battery makes the device heavy and cumbersome to carry; choosing a device with a 8-hour battery life for the scenic area, charging during the journey would cause additional troubles.   Yingmi has thought this through very carefully. The battery life of its products is exactly suitable for the scenarios. For example, the self-service guide machine focuses on "sufficient for the whole day", the transmitter and receiver of the team explanation device are matched perfectly in battery life, neither being insufficient nor adding extra battery life that makes the device heavy; many foreign customers say, "This is so considerate, there's no need to figure it out on your own."   2.Don't be fooled by "false battery life"! Two details to distinguish truth from falsehood   Many brands claim "battery life of 12 hours", but in actual use, it's only 6-7 hours. This is a typical case of false marking. Foreign customers purchase from a distance and can't test it in person. Teach you two simple tricks to tell the truth from falsehood: one is to look at the battery type and management technology, and the other is to look at real scenario cases. It's much more reliable than just looking at parameters.   Yingmi uses high-quality polymer lithium batteries and has independently developed PMU safe intelligent lithium battery power management technology. It can precisely control the power consumption and won't have false marking. Take the M7 self-service guide machine of Yingmi for example, used for 12 hours of high-intensity use in the scenic area, the battery still has more than 30% remaining, which is the real battery life.   Ⅱ.Why is Yingmi's battery life reliable? From technology to design, there are tricks   Yingmi's long battery life is not achieved by "stacking battery capacity", but through optimization in technology, hardware, and design. Every step is centered around "energy saving, durability, and suitability for scenarios". This is also the core reason why it can export to dozens of countries around the world without any negative reviews.   1. Core technology: intelligent power saving + energy-saving chip, no electricity wasted   The core of Yingmi's battery life is the PMU safe intelligent lithium battery power management technology. Simply put, this thing is like installing an "intelligent power saving manager" for the device - when not in use, it automatically enters a low-power mode, precisely allocating power during the explanation, not wasting any. Combined with a specially customized energy-saving chip, the power consumption can be further reduced.   For example, the transmitter of Yingmi E8 all-in-one audio guide device, with this technology, the working time can be stable for more than 15 hours； the receiver's battery life can also reach 8 hours, fully sufficient for international exhibitions and large conferences. Even more impressive is that this technology can protect the battery, and the battery life won't significantly decline after using the device for two or three years, eliminating the need for frequent equipment replacement, which is more cost-effective.   2.Hardware selection: good battery + strict testing, reliable in extreme environments   Battery quality determines the battery life. Yingmi never opts for cheap, inferior batteries. Instead, it always selects high-quality polymer lithium batteries, which not only have stable capacity but are also safe and environmentally friendly. They have passed the EU RoHS certification and can be exported to Europe and Southeast Asia without any issues.   Moreover, each battery must undergo several tests: charging and discharging, high and low temperatures, and vibrations must all meet the standards. Take the equipment exported to the Middle East for example. When used in a high-temperature environment, the battery will not bulge and the battery life will not drop suddenly; when exported to Northern Europe, it can start normally even in low-temperature days, without any impact.   3.Product Design: Long battery life and lightweight, no burden to carry   Many brands strive for long battery life by making their devices thick and heavy, which makes them extremely heavy when carried. Yingmi considered this when designing, achieving "long battery life and lightweight". For example, the E8 ear-mounted receiver weighs only 18 grams, lighter than an ordinary pair of headphones, yet it can last for more than 8 hours; the R8 ear-mounted receiver is even lighter, weighing only 17 grams, and has enough battery life for an entire day.   This design is extremely important for foreign customers - tourists in scenic spots and exhibition attendees won't feel burdened when wearing it for a whole day, and won't be affected by the heavy device during the experience; when carrying in large quantities, it is also convenient, as there is no need to exert extra effort to move it. A French customer reported: "Yingmi's devices not only have sufficient battery life but are also very lightweight. Our tourists all like them, and no one complains about being tired from wearing them."   Ⅲ.Real-world Testing of Battery Life: How does Yingmi's battery life perform in real environments?   Rather than discussing technical parameters, it is better to see the real-world performance. The following are real cases of foreign customers that Yingmi has served, covering scenic spots, factories, international conferences, and museums. After viewing these cases, you will know whether its battery life is reliable or not.   1. Scenic Spot  Audio Guide: Self-service audio guide machine, no need for charging throughout the day   Scenic spot tour guiding tests the battery life the most. Tourists usually spend a whole day visiting, and the self-service tour guide machine must last the entire day. The Yingmi M7 neck-mounted self-service audio guide machine has a stable battery life of over 16 hours, which is sufficient for the entire day in the scenic spot and does not require finding a power source in the middle.   A batch of these was purchased by the Xiangkun Temple in Vientiane, Laos. The temple is open for 12 hours a day, and the average usage time is 8 hours. One device can be charged once and can be used for two days, eliminating the need for staff to constantly move the charging device around, making their work much easier.   2.International Conferences/Exhibitions: Multi-language explanations, stable until the end of the event   International conferences and exhibitions usually last for a whole day or even several days. The battery life of the explanation device cannot fail. The Yingmi E8 integrated explanation device has a transmitter battery life of over 15 hours and a receiver battery life of over 8 hours. Combined with a dedicated charging box, it can fully meet the requirements.   Once at an international machinery exhibition, the Yingmi E8 worked continuously for 12 hours, and the battery still had over 20% remaining. The electronic equipment at the scene was numerous, but it did not affect its battery life, and it provided stable output. An overseas exhibitor said: "Previously, we used other brands, and the battery ran out in the afternoon. After switching to Yingmi, we didn't have to worry about battery life all day, it was very reliable." The Shanghai Cooperation Organization's Supreme Judicial Council meeting also used this model. The equipment lasted the entire day without any power interruption, and the organizers highly recognized it.   Conclusion   For foreign customers, the battery life of the wireless guide device is not just a "numbers game", but a "practical guarantee" - whether it can last throughout the day, how convenient the charging is, and whether it can fit their specific scenarios, these are the key factors. Yingmi has been manufacturing guide devices for 18 years, relying on PMU power management technology, high-quality lithium batteries, and precise scene adaptation, making "long battery life" its core selling point.   Whether you are conducting scenic area tours, factory receptions, or international conferences, or giving museum tours, Yingmi has corresponding long battery life solutions. Moreover, its equipment complies with international certifications, is compatible with global voltages for charging, and has after-sales support. After foreign customers purchase it, they don't need to worry at all. After all, when choosing a guide device, having stable battery life means being able to provide better reception services with greater ease.   FAQ   Q1: What are the specific battery life for different models of Yingmi? A1: Different models are suitable for different scenarios. The battery life matches perfectly: ① M7 Self-guided Tour Machine: Battery life over 16 hours, suitable for use throughout the day in scenic spots; ② E8 Team Guide Device: Transmitter battery life ≥ 15 hours, receiver battery life ≥ 8 hours, suitable for large conferences and exhibitions; ③ K8 Team Guide Device: Transmitter battery life over 12 hours, receiver battery life over 8 hours, suitable for factories, government and enterprise receptions; ④ C7 Touchscreen Tour Device: Battery life over 10 hours, suitable for museums and small exhibition halls.   Q2: How long does it take to charge the Yingmi guide device? How many devices can a charging box charge at once? A2: The regular charger takes 2-3 hours to fully charge; the dedicated charging box is more efficient. A 36-port one can charge 36 devices at once, and a 48-port one can charge 48 devices at once. During charging, it can also perform ultraviolet disinfection, making batch management very convenient.   Q3: Can the charging voltage of Yingmi charging equipment be adapted for export to our country? A3: Absolutely! Yingmi charging equipment supports a wide voltage input range of 100V-240V. Most countries and regions around the world can match this voltage, so there is no need to purchase voltage converters separately. Once you receive it, you can charge directly. About us   HEFEI HUMANTEK. CO., LTD. has been dedicated to the research and development and production of tour guide devices for 18 years. Our company mainly deals in team tour guide systems, self-service audio guide systems, multi-channel tour guide systems, and intelligent presentation systems. As an innovative enterprise, Yingmi Technology holds multiple core patents and technical certifications, and its strength is highly recognized. The company possesses H4 national patent core technology, a 7S product guarantee system, and a 9G service system throughout the entire life cycle, ensuring zero accidents from the first unit to one million units, all for the reliable delivery of products and services to customers! The company is committed to creating industry-leading intelligent tour guide solutions through a strategy of integrating online and offline as well as domestic and international interaction, and promoting a comprehensive upgrade of cultural and tourism display experiences.

When foreign customers purchase wireless audio guide devices, the biggest concern is the signal failure - while leading a tour in a scenic area, the headphones suddenly lose sound; during a factory visit to a critical process, the signal gets stuck and key points are missed; at international conferences, multilingual explanations become a "messy mixture" due to frequency interference. In fact, whether the signal of the wireless audio guide is good or not is not just determined by the merchant's claim of "stability", the core lies in the selection of frequency band, anti-interference technology and actual scene adaptation. Yingmi, who has been deeply involved in the industry for 18 years and has been engaged in foreign trade export for a long time, has mastered the core skills through solid technology and over a thousand cases worldwide, making "stable signal" a core brand. Many foreign customers have used it and come back to place new orders.   Ⅰ.Is the signal stable? First, understand these two key issues   Many people think that "the signal is good or not depends on how far it can be transmitted", which is only half right. The signal of the wireless audio guide is mainly about "stable transmission + anti-interference" - even if it transmits far, as long as there is interference, it will lose frequency and connection, and it is still unusable. Especially for foreign customers, the signal environment in different countries is different, and they must understand these two key points to avoid pitfalls.   1. The core reason for poor signal: not distance, but interference and incorrect frequency selection   Poor signal of the wireless audio guide is usually caused by two reasons: one is choosing a frequency band that is prone to interference, and the other is insufficient anti-interference technology. Most cheap audio guide devices on the market use low-frequency bands, which just happen to coincide with Bluetooth and WiFi in mobile phones. In places with many electronic devices like scenic areas or exhibitions, it is almost impossible to avoid interference.   Some scenarios are inherently "poor in signal", such as large motors in factories generating strong electromagnetic radiation, dense mobile phone signals in scenic areas, and multiple devices working simultaneously in international exhibitions. These all make the signal weaker. Therefore, when choosing an audio guide, first look at its frequency band and anti-interference technology, and then talk about the transmission distance, which is the correct order.   2.Don't be fooled by parameters! These two indicators are the key to signal stability   Many merchants will boast "transmission distance of 500 meters" and "strong signal penetration", but they do not clarify whether it is in an "open and interference-free environment" or in "actual complex scenarios". For foreign customers, the key indicators to focus on are: first, the frequency band, prioritize choosing a high-frequency band above 800 MHz; second, modulation technology, support 4GFSK or GFSK, the signal will be more stable.   All of Yingmi's main products meet these two standards. For example, the E8 all-in-one audio guide uses the 860-870 MHz high-frequency band and is equipped with 4GFSK modulation technology. Even in complex environments, the signal can be transmitted stably, which is the core reason why it can serve the SCO conference and international museum forums.   Ⅱ.The core secrets of Yingmi's stable signal: From technology to workmanship, there are tricks hidden   The stability of Yingmi's signal is not supported by a single technology, but is designed throughout the entire chain from research and development, production to quality control. Every link focuses on "anti-interference, stable transmission", which is also the key reason why it can export to dozens of countries around the world and has zero negative reviews.   1. Core technology: Triple protection, making the signal not be interfered with   Yingmi adds "triple protection" to the signal to solve the interference problem from the source. The first layer is "selecting the right frequency band", all team models and self-service models use the 800 MHz above high-frequency band, far away from the interference frequency bands of mobile phones and WiFi, which is like opening an "exclusive channel" for the audio guide signal; the second layer is "digital anti-interference", using digital secondary frequency conversion technology and 200k ultra-small channel bandwidth, like dividing each team's signal into exclusive small grids, even if multiple devices are used simultaneously, there will be no frequency interference; the third layer is "chip support", equipped with an embedded SOC chip, which can automatically filter noise, even if there is electromagnetic radiation, it will not affect signal transmission. For example, the YingmiR8 ear-mounted audio guide uses these three technologies to ensure that even when dozens of devices are working simultaneously in peak tourist seasons, they do not interfere with each other. The transmission distance remains stable within 200 meters, and even with wall obstructions, the signal does not significantly weaken.   2.Hardware Construction: Ensuring Signal Stability from the Production End   Signal stability also depends on solid hardware. Yingmi has its own SMT assembly factory with 4 automated production lines, controlling everything from chips to the casing. The core chips are selected from high-quality low-power models that can reduce the electromagnetic radiation of the equipment and prevent "self-interference"; the casing is made of environmentally friendly ABS plastic, and an internal shielding layer is added to block external electromagnetic signals from invading.   What's even more rigorous is the factory testing - every Yingmi device must pass the signal test: measured for frequency interference in an environment simulating dense mobile phone signals, stability tested in an environment simulating factory electromagnetic fields, and penetration tested in environments with multiple wall obstructions. If any one item fails, it will be returned for rework. Thanks to this, Yingmi devices have been exported for many years and rarely receive complaints from customers about the signal.   3.Scene Adaptation: Special Signal Solutions for Different Environments   The signal environment varies in different scenarios. Yingmi does not use a single solution to handle all situations. For example, for the open environment of scenic spots, the signal transmission distance has been optimized; for the strong electromagnetic environment of factories, the shielding and anti-interference have been strengthened; for the multi-wall and exhibit-dense environment of museums, high-precision positioning technology has been adopted to ensure precise signal triggering.   Take Yingmi's zone-based explanation system as an example, which is specifically designed for large exhibition halls and parks. It uses LD high-precision positioning technology, combined with RFID, infrared, and WiFi three positioning methods. Even in a complex environment with multiple walls and multiple zones, it can achieve "sound starts when people arrive, and stops when people leave", with smooth signal switching and no connection loss or false triggering.   Ⅲ.Must-see for Foreign Customers: Yingmi's Additional Advantage of Signal Adaptation to Global Scenarios   When foreign customers purchase, in addition to stable signals, they also need to worry about whether the equipment can adapt to the local signal environment and whether it complies with international standards. Yingmi has already considered this. Customers don't need to worry about it themselves.   1. All devices have passed international certifications and can be used globally   All Yingmi devices have passed the EU CE certification and RoHS environmental certification, and the frequency can be adjusted according to different national regulations. For example, devices exported to Europe will be adjusted according to the local frequency requirements, neither interfering with local public signals nor being interfered with by them; for devices exported to Southeast Asia, the hardware has been optimized for the high-temperature and high-humidity environment, and the signal stability will not be affected by the weather.   2.Rich foreign trade experience, understanding of different global scenarios   Yingmi started doing foreign trade in 2009, with products sold to dozens of countries such as France, Germany, Malaysia, and Indonesia. It has seen all kinds of international scenarios. For example, in the Middle East with frequent sandstorms, equipment for scenic spots has been equipped with dust-proof design to ensure that the signal receiver is not blocked by sand; for large-scale exhibitions in Europe and America, they have pre-set the compatible channels, and customers can start using the equipment as soon as they turn it on without their own debugging.   3.Pre-sales testing + after-sales support, confident purchase   If foreign customers are worried about signal adaptation issues? Yingmi supports free sample testing before purchase - customers clearly describe their scenarios, Yingmi sends samples, and if the test is satisfactory, the order will be placed. After-sales support also provides remote technical assistance. If there are signal problems, engineers can help debug online without having to travel across borders.   Conclusion   For foreign customers, the stable signal of the wireless guide device not only enhances the reception experience, but also is crucial for avoiding communication errors and maintaining the brand image. Yingmi has been manufacturing guide devices for 18 years and has been exporting them for over a decade. What sets them apart is their strong capabilities of "stable signal and strong anti-interference" - from technological research and development to production control, from scene adaptation to international certification, every step is meticulous.   Whether you use it for scenic area guidance, factory reception, international conferences, or museum explanations, Yingmi has corresponding signal solutions. After all, the core of the guide device is "clear sound and continuous connection", and a stable signal is the foundation for achieving all of this.   Technology Layer Key Features Functionality Frequency Band Selection 800+ MHz high-frequency band Avoids interference from mobile phone Bluetooth/WiFi; exclusive signal channel Digital Anti-Interference Digital secondary frequency conversion; 200k ultra-small channel bandwidth Segregates team signals; no frequency overlap Hardware Construction High-quality low-power core chips; ABS casing with internal shielding layer Reduces self-interference; blocks external electromagnetic invasion   FAQ   Q1: How far can the signal transmission range of the Yingmi speaker reach? Is it sufficient in practical scenarios? A1: For the regular models (such as R8, E8), in an open environment, it can reach up to 200 meters. In actual complex scenarios, it stabilizes at 100-150 meters, fully meeting most reception requirements; for the special models (such as 008A), the farthest distance it can reach is 280 meters, suitable for large parks and outdoor exhibitions.   Q2: Will there be frequency interference or signal interference when multiple teams use it simultaneously? A2: No. The Yingmi device supports 200 selectable channels. Combined with a 200k ultra-small channel bandwidth and 4GFSK modulation technology, as long as multiple teams switch to different channels, the signals will not interfere with each other. Even if dozens of devices are working simultaneously, there will be no problem.   Q3: Can the frequency of the Yingmi device be adapted to the local standards when exported to our country? A3: Absolutely. The Yingmi device has passed the EU CE and RoHS certifications. The frequency can be precisely adjusted according to the norms of different countries and regions to ensure compliance with local signal standards, and there will be no interference with public signals or inability to use. About us   HEFEI HUMANTEK. CO., LTD. has been dedicated to the research and development and production of tour guide devices for 18 years. Our company mainly deals in team tour guide systems, self-service audio guide systems, multi-channel tour guide systems, and intelligent presentation systems. As an innovative enterprise, Yingmi Technology holds multiple core patents and technical certifications, and its strength is highly recognized. The company possesses H4 national patent core technology, a 7S product guarantee system, and a 9G service system throughout the entire life cycle, ensuring zero accidents from the first unit to one million units, all for the reliable delivery of products and services to customers! The company is committed to creating industry-leading intelligent tour guide solutions through a strategy of integrating online and offline as well as domestic and international interaction, and promoting a comprehensive upgrade of cultural and tourism display experiences.