Product
The B7-2 tour guide audio system consists of the B7-2 Transmitter and the B7-2 Receiver. Designed for versatility, the transmitter supports external microphones and noise cancellation, while the receiver features a dual-mode switch between Headphone and Bluetooth modes. Whether you are looking for professional headsets for guided tours or a reliable communication tool for group receptions, the B7-2 ensures simple, stable, and crystal-clear operation.

Features
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Dual-Mode Reception: The B7-2 Receiver supports seamless switching between Headphone and Bluetooth modes, making it the most flexible bluetooth tour guide system available for different user preferences.
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One-Key Pairing: Automatic search and pairing between transmitter and receiver—no complex setup required.
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Smart Power Saving: Automatic shutdown after 5 minutes of disconnection in Bluetooth mode, or immediately upon being placed in the charging case.
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Clear Voice Prompts: Audible alerts for power on, connection status, and low battery.
B7-2 Transmitter
Appearance & Interfaces
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3.5mm Mic Jack: Ideal for a museum audio guide device setup where high-quality voice input is essential.
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3-Position Power Switch: ON / LOCK / OFF (Lock mode only disables channel adjustment keys).
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Charging Options: Type-C charging port + Charging base contacts.
Button Functions
| Button | Operation | Function |
| Mute / Power Off | Short Press | Toggle Mute ON/OFF |
| Pairing (CH) | Long Press | Enter pairing mode for multiple headsets for guided tours |
| Noise Cancellation | Long Press | Toggle Noise Cancellation ON/OFF (NC-1) |
| Bluetooth | Long Press | Toggle Transmitter Bluetooth ON/OFF |
B7-2 Receiver
Mode Descriptions
1. Headphone Mode
Perfect for traditional tour guide audio applications.
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Connected: Steady Green light; Voice prompt: "Connected".
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Out of Range: Red/Green lights flash alternately; Voice prompt: "You are out of range".
2. Bluetooth Mode
Transforms the unit into a modern bluetooth tour guide system.
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Connected: Steady Blue light (Bluetooth Name: A16).
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Versatility: Allows users to connect their own wireless earphones for a more personalized experience.
Special Functions
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One-Key Pairing: Specific to B7-2 Transmitter ID for secure communication.
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Universal Application: Its compact design makes it a top choice for any museum audio guide device or factory tour.
Usage Scenarios
| Scenario | Recommended Configuration |
| Tour Guiding | Guide uses B7-2 Transmitter; Tourists use B7-2 headsets for guided tours. |
| Museum Visits | Configure as a museum audio guide device with pre-recorded audio or live narration. |
| Conference Training | Use as a bluetooth tour guide system to connect with various wireless output devices. |
B7-2 Wireless Tour Guide System: Freedom to explain, clarity to listen. Ready to use, stable, and reliable.