FSC-BT825 Realtek RTL8761 Dual-Mode Bluetooth 4.2 Module


The Feasycom FSC-BT825 is a fully integrated Bluetooth module that complies with Bluetooth 4.2 dual mode protocols (BR/EDR and LE). It supports SPP, HID, GATT, ATT, and other profiles. It integrates baseband controller and RF antenna in a small package, so the designers can have better flexibilities for the product shapes. FSC-BT825 can be communicated by UART port. With Feasycom's Bluetooth stack, customers can easily transplant to their software. Please refer to Feasycom stack design guide.


  • Fully qualified Bluetooth 4.2/3.0/2.1/2.0/1.2/1.1
  • Postage stamp sized form factor
  • Low power consumption
  • Supports Class 1.5 high output power
  • Supports SPP, HID, GATT, ATT, and GAP profiles
  • Supports Apple MFi (iAP2) and iBeacon
  • The default UART baud rate is 115.2 Kbps and can support from 1200 bps up to 921.6 Kbps
  • Supports UART and PCM interfaces
  • Supports the OTA upgrade


  • Smart watch and bracelet
  • Health & medical devices
  • Wireless POS
  • Measurement and monitoring systems
  • Industrial sensors and controls
  • Asset tracking


Bluetooth Module FSC-BT825
Chipset Realtek RTL8761
Bluetooth Standard Dual-mode Bluetooth 4.2
Frequency Band 2.402~2.480GHz ISM band
Transmit Output Power +5.5 dBm (Max.) Class 1.5
Receive Sensitivity -82 dBm @ 0.1% BER
Profiles SPP, HID, GATT, ATT, GAP, MFi, Airsync, ANCS, iBeacon
Interfaces UART, PCM
Antenna Internal antenna default, external antenna optional
Size (mm) 10.8 × 13.5 × 1.8
Power Supply 3.3V DC
Operating Temperature 0℃ to 70℃

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