The FSC-BP401 is a Bluetooth audio transmitter that supports both classic Bluetooth and LE Audio, compatible with Bluetooth 5.3, and featuring a USB 2.0 interface. The USB functionality of the FSC-BP401 is driver-free and compatible with Windows, Linux, and iOS systems. Upon connection, the USB is recognized as a composite device, comprising a USB audio input/output device and a USB virtual serial port. Basic functions can be configured through button presses or via the USB virtual serial port interface. The USB device is identified as FSC-BP401.
| Specifications | Description |
| Chipset | nRF5340+CSR8811+PA |
| Bluetooth Version | Bluetooth 5.3 |
| Working Frequency | 2.4 GHz |
| Transmission Speed | 2 Mbps |
| Transmission Power | +18dBm |
| Transmission Distance | Up to 100 meters |
| Antenna | Built-in antenna |
| Power Supply | USB |
| Supply Voltage | 5V |
| Interface | USB2.0 A |
| Colour | black |
| Protocol | LE Audio/HFP/ A2DP |
| System Compatibility | Support Win7/8/10/11 |
| Device Name | FSC-BP401 |
| Operating Temperature | -20~70℃ |
| Storage Temperature | -20~70℃ |
| Indicator light | Red, green and blue |
| Button | Single button |