FSC-BT2661 Dual-Mode Bluetooth 5.3 Data Transmission Module


The Feasycom FSC-BT2661 supports dual-mode Bluetooth 5.3 (BR/EDR/BLE). By default, FSC-BT2661 module is equipped with powerful and easy-to-use Feasycom firmware. It's easy to use and completely encapsulated. Feasycom firmware enables users to access Bluetooth functionality with simple ASCIl commands delivered to the module over serial interface, just like a Bluetooth modem. Therefore, FSC-BT2661 provides an ideal solution for developers who want to integrate Bluetooth wireless technology into their design.


  • Compatible with dual-mode Bluetooth 5.3 specifications
  • Low power consumption
  • Standard configurable RF transimission power from -20 dBm to +10 dBm
  • Supports dynamic TX power control
  • Postage stamp sized form factor
  • Supports long-distance transmission of LE 125Kbps or 500Kbps
  • Supports RSSI
  • Bluetooth host protocol stack implemented by another MCU or host AP


  • Bluetooth KEY
  • OBU
  • Smart home
  • Data transmission module
  • Dual-mode Bluetooth HCI controller
  • High security and reliability of Bluetooth MCU applications


Bluetooth Module FSC-BT2661
Bluetooth Standard Dual-mode Bluetooth 5.3
Frequency Band 2.4G ISM band (2402~2480 MHz)
Transmit Output Power +10 dBm (Max.)
Receive Sensitivity -93 dBm @ 2Mbps EDR
Profiles Implemented by another MCU or host AP
Interfaces UART, PIO, ADC
Size (mm) 10 × 16 × 1.7
Power Supply 2.5~3.6V
Operating Temperature -40℃ to +85℃
Storage Temperature -40℃ to +85℃

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