Wireless Tour Guide System With Noise Cancellation
Range: 300m
Battery Life: 40 Hours
Channels: 999
Noise Cancellation: NC-1
Charging: USB-C
Hefei Humantek Co., Ltd. is one of the leading manufacturers and suppliers of wireless tour guide system with noise cancellation in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy bulk high quality wireless tour guide system with noise cancellation from our factory.
The B7-3 wireless tour guide system consists of a matched transmitter and receiver set, specifically designed to maintain clear audio quality in noisy, crowded, and windy environments-ranging from museum halls to outdoor production lines.
Product Features
Noise Cancellation
A dedicated noise-cancellation mode on the transmitter suppresses ambient sound at the source, so the receiver plays back a cleaner voice signal instead of a louder room.
999-Channel Auto Pairing
One press links transmitter and receiver on a clear channel within the 2.4GHz band. Manual channel adjustment is available for venues running several tour groups in parallel..
Built-In Bluetooth
Bluetooth can be switched on independently of the RF link, giving venues a fallback connection method or a way to pair with existing AV equipment.
One-Key Mute
A single button silences the guide's mic instantly - useful for side conversations, coughing, or handling an unrelated question mid-tour without cutting the whole system.
Specifications
Transmitter
| Operating Frequency | 2.4GHz, 999 channels (CH001–CH999) |
| Transmission Range | 50–300m (line of sight) |
| Microphone | Built-in unidirectional mic + 3.5mm external input |
| Battery | 3000mAh, 3.7V |
| Battery Life | Up to 20 hours (Bluetooth off) |
| Charging | Charging dock or USB-C, 0.8A, ~4 hours full charge |
| Operating Temperature | -20°C to 70°C |
| Dimensions | 114.7mm (L) × 55.3mm (W) × 20.8mm (H) |
| Controls | Power/lock switch, pairing key, noise-cancellation toggle, Bluetooth toggle, one-key mute/power |
Receiver
| Operating Frequency | 2.4GHz, auto channel sync with transmitter |
| Reception Range | 50–300m (line of sight) |
| Battery | 600mAh, 3.7V |
| Battery Life | Up to 40 hours (display off) |
| Charging | Charging dock or USB-C, 200mA, ~3 hours full charge |
| Operating Temperature | -20°C to 70°C |
| Dimensions | 61.2mm (L) × 26.1mm (W) × 15.6mm (H) |
| Weight | Approx. 22g (excluding earpiece) |
| Indicators | LCD status screen; LED for charging, pairing, and low-battery states |
Product Details
Microphone Input
The transmitter carries a built-in unidirectional microphone for hands-free wear, and a 3.5mm jack for guides who prefer a lavalier or headset mic instead. Both routes feed into the same noise-cancellation processing before the signal goes out.
Connectivity
The primary link runs on a dedicated 2.4GHz band across 999 channels. Bluetooth can be switched on separately, giving venues a second connection option for existing AV equipment or as a backup.
Wearable Design
The receiver sits over the ear rather than inside it, which holds up better over a multi-hour tour and doesn't require a custom-fit tip. A lanyard hole is built into the housing for venues that prefer a neck-worn setup.Lorem ipsum dolor sit ametli consectetur notted adipisicing elit sed do eiusmod.
Power
Battery life is rated with the screen powered down between checks. Reception stays reliable across the same 50–300m range as the transmitter's output.
Application Scenarios
Museums & Galleries
Keeps a guide's narration audible in echo-prone stone or glass-heavy exhibit halls, without raising the guide's voice above conversational level.
Factory & Industrial Tours
Rated to -20°C–70°C and built to cut through machinery noise, suited to plant visits, supplier audits, and production-line walkthroughs.
Outdoor & Heritage Sites
300m range and weatherproof-rated components support open-air routes across large campuses, historic districts, and archaeological sites.
Conferences & Simultaneous Interpretation
999-channel selection allows several language channels or session tracks to run in the same venue at once without interference.
FAQs
1. What's the effective range between the transmitter and receiver?
Both units are rated for 50–300m under line-of-sight conditions. Actual range depends on the environment - expect the shorter end of that range in spaces with thick walls, metal structures, or heavy interference, and the longer end in open indoor halls or outdoor settings.
2. How does the noise-cancellation feature actually work?
The transmitter processes the guide's voice at the source, filtering out ambient sound - HVAC noise, foot traffic, overlapping conversations - before the signal is sent. The receiver plays back a cleaner voice track rather than a louder version of the room, which is different from receiver-side volume boosting.
3. Can multiple tour groups use this system in the same building without interference?
Yes. The system operates across 999 selectable channels within the 2.4GHz band. One-key auto-pairing links a transmitter and receiver on a clear channel automatically, and manual channel selection is available for venues running several groups or language tracks in parallel.
4. How long do the transmitter and receiver last on a single charge?
The transmitter runs up to 20 hours with Bluetooth active; the receiver runs up to 40 hours with its display off. Both units share the same magnetic charging dock, so a full fleet can be charged overnight from one station. Full charge time is about 4 hours for the transmitter and 3 hours for the receiver.
5. Does Yingmi support custom branding or bulk orders for venues?
Yes. As the manufacturer, Yingmi can adjust branding, packaging, firmware language, and charging-case configurations directly at the factory. Order volume is flexible - smaller pilot runs and standard bulk production are both supported, along with OEM/ODM development for buyers with specific technical requirements.
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