Anhui YingMi Smart. CO., LTD.
| Packaging Details | packed in carton box |
| Delivery Time | 5-8 working days |
| Payment Terms | L/C, paypal |
| Model Number | B7-3 |
| Place of Origin | China |
| Brand Name | Yingmi |
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Product Specification
| Packaging Details | packed in carton box | Delivery Time | 5-8 working days |
| Payment Terms | L/C, paypal | Model Number | B7-3 |
| Place of Origin | China | Brand Name | Yingmi |
The 300m figure reflects open, unobstructed conditions — a straight sightline between transmitter and receiver with nothing dense in between. Inside a real museum, expect that number to shrink depending on what's in the way: stone walls, metal display cases, multi-floor layouts, and crowded rooms all absorb or reflect the 2.4GHz signal, so effective range in a typical gallery setting tends to land closer to 50–150m rather than the full 300m.A docent steps into a gallery already mid-tour, three more groups moving through adjacent rooms on the same floor. Every visitor still needs to hear only their own guide — clearly, and without a single crossed channel.
Museums rarely run one tour at a time. This system is built around that reality.
The 300m figure reflects open, unobstructed conditions — a straight sightline between transmitter and receiver with nothing dense in between. Inside a real museum, expect that number to shrink depending on what's in the way: stone walls, metal display cases, multi-floor layouts, and crowded rooms all absorb or reflect the 2.4GHz signal, so effective range in a typical gallery setting tends to land closer to 50–150m rather than the full 300m.
The transmitter runs up to 20 hours and the receiver up to 40, and both charge on the same magnetic dock overnight. For a museum running back-to-back tours across the day, that's one charging routine instead of two separate schedules.
| Frequency | 2.4GHz, 999 channels |
| Range | 50–300m |
| Microphone | Built-in + 3.5mm external input |
| Battery | 3000mAh, up to 20 hours |
| Charging | Dock or USB-C, ~4 hours |
| Operating Temp. | -20°C to 70°C |
| Dimensions | 114.7 × 55.3 × 20.8mm |
| Frequency | 2.4GHz, auto-synced |
| Range | 50–300m |
| Display | LCD + status LED |
| Battery | 600mAh, up to 40 hours |
| Charging | Dock or USB-C, ~3 hours |
| Operating Temp. | -20°C to 70°C |
| Weight | ~22g |
Museum tours pose a specific problem: many small groups, close together, in echo-heavy rooms.
Deployment support that goes beyond shipping a box of hardware.
Yes. The 2.4GHz band spans 999 selectable channels, and each transmitter-receiver pair auto-syncs to a clear one. Adjacent docent groups on separate channels won't pick up each other's audio.
Up to 300m under open line-of-sight conditions. Stone walls, metal display cases, and multi-floor layouts will reduce that range, so expect shorter effective distances inside dense gallery spaces.
The transmitter runs up to 20 hours and the receiver up to 40 hours on a single charge, which covers a full operating day for most museums without a midday swap.
The ear-hook design doesn't require a custom-fit tip, and units can be wiped down between uses. No pairing reset is needed between visitors as long as the receiver stays matched to its assigned transmitter channel.
Yes. Order volume is flexible, from a small pilot set for one gallery wing to a full building-wide fleet, with charging case configurations sized to match.
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2007
Employee Number:
100~200
Ecer Certification：
Site Member
With 19 years of specialized industry expertise dating back to 2007, Yingmi has partnered with museums, scenic areas, heritage sites, and tour operators to design and deliver audio guide programs that work — for visitors, for staff, and for the long run. We bring the hardware, the service infr... With 19 years of specialized industry expertise dating back to 2007, Yingmi has partnered with museums, scenic areas, heritage sites, and tour operators to design and deliver audio guide programs that work — for visitors, for staff, and for the long run. We bring the hardware, the service infr...
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