FSC-BT909C Bluetooth 5.2 Audio Tx Rx & Transceiver Module for Master & Slave


FSC-BT909C is a Bluetooth 5.2 Smart Ready module that supports BR/EDR and LE simultaneously. It is compact, energy-efficient, and cost-effective, designed for OEMs to easily integrate wireless functionality into their products. The module offers versatile interfaces for seamless integration into certified embedded Bluetooth solutions. With AT programming interfaces, developers can customize applications to support various Bluetooth profiles like HS/HF, A2DP, AVRCP, OPP, DUN, and SPP. It supports Bluetooth® Enhanced Data Rate (EDR) up to 3 Mbps, enabling reliable communication over distances of up to 100 meters. Compatible with iOS, Android, and Windows, FSC-BT909C includes an external whip antenna for extended transmission range exceeding 2000 meters.


  • Fully qualified Bluetooth 5.2/4.2/3.0/2.1/2.0/1.2/1.1
  • Postage stamp sized form factor
  • Class 1 support (high output power)
  • Low power consumption
  • The default UART Baud rate is 115.2Kbps and can support from 1200bps up to 921Kbps
  • Interfaces: UART, I²C, PCM/I2S data connection
  • Supported profiles: HS/HF, A2DP, AVRCP, OPP, DUN, SPP, HID, BLE
  • RoHS compliant
  • FCC and CE Certified


  • Cable replacement
  • Portable multimedia players
  • High quality stereo headsets
  • High quality mono headsets
  • Hands-free car kits
  • Wireless speakers
  • Bluetooth-enabled automotive dashboards
  • VoIP handsets
  • Medical devices
  • Barcode and RFID scanners
  • Industrial devices


General Specification
Bluetooth Audio Module FSC-BT909C
Dimensions (mm) 13 × 26.9 × 2.2
Bluetooth Specification Bluetooth V5.2 (Dual Mode)
Power Supply 3.3 Volt DC
Output Power 18.5 dBm (Class 1)
Sensitivity -86 dBm @ 0.1% BER
Frequency Band 2.402GHz ~ 2.480GHz ISM band
Modulation GFSK 8DPSK, DQPSK
Baseband Crystal OSC 26 MHz
Hopping & channels 1600hops/sec, 1MHz channel space, 79 Channels (BT 5.2 to 2MHz channel space)
RF Input Impedance 50 ohms
Antenna Integrated chip antenna
Interfaces Data: UART (Standard), I²C
Audio: MIC In (Standard), PCM/I²S
Others: PIO, AIO, Touch sensor, PWM, USB 2.0
Profiles SPP, GATT (BLE Standard), MFI, Airsync, ANCS, iBeacon, HID, HS/HF, A2DP, AVRCP
Temperature -20°C ~ +85°C
Humidity 10% ~ 95% Non-Condensing
Environmental RoHS Compliant
MSL Grade MSL 3
ESD Grade Human Body Model: Class-2
Machine Model: Class-B
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