FSC-BT826B RTL8761BTV Dual-Mode BT 5.3 Module for Master & Slave Data Transmission (High Output Power and support MFi & iBeacon)


FSC-BT826B is a dual-mode Bluetooth 5.3 module specifically optimized for applications in high-speed wireless printers. It offers high-speed data transmission capabilities. When connected to devices using the Android operating system via the SPP profile, it supports a maximum data transfer rate of 80KB/s. For devices using the iOS system and connected via the GATT profile, it supports a maximum data transfer rate of 65KB/s. This ensures fast and reliable data transfer, facilitating quick and efficient communication between devices. With its optimized design for printer applications, FSC-BT826B provides robust and high-performance connectivity solutions. Its support for multi-master configuration and high-speed data transmission make it an ideal choice for a wide range of industrial applications.


  • Bluetooth 5.3 specification compliant
  • Postage stamp sized form factor
  • Low power
  • Supports TX +10 dBm maximum output power for Bluetooth BR/BLE
  • Supports TX +7.5 dBm maximum output power for Bluetooth EDR
  • Receive sensitivity: -94 dBm (2Mbps EDR Minimum)
  • Receive sensitivity: -98 dBm (BLE Minimum)
  • The default UART Baud rate is 115.2 Kbps and can support from 1200 bps up to 921.6 Kbps
  • UART, I²C hardware interfaces
  • Support the OTA upgrade (optional)
  • Bluetooth stack profiles support: SPP, HID, GATT, ATT, GAP
  • Support Apple MFi (iAP2), iBeacon


  • Smart Watch and Bluetooth Bracelet
  • Health & Medical devices
  • Wireless POS
  • Measurement and monitoring systems
  • Industrial sensors and controls
  • Asset Tracking


General Specification
Chipset Realtek RTL8761BTV
Product FSC-BT826B
Dimensions (mm) 13 × 26.9 × 2
Bluetooth Specification Bluetooth V5.3 (Dual Mode)
Power Supply 3~3.6 Volt DC
Output Power +4.5 dBm (default for all data rate)
+10 dBm (BR/BLE) (Max.)
+7.5 dBm (EDR) (Max.)
Sensitivity -94 dBm (2Mbps EDR) (Min.)
-98 dBm (BLE) (Min.)
Frequency Band 2.402 ~ 2.480 GHz ISM band
Modulation GFSK, π/4-DQPSK, 8-DPSK
Baseband Crystal OSC 40 MHz
Hopping & channels 1600 hops/sec, 1MHz channel space, 79 Channels (BT 5.x to 2MHz channel space)
RF Input Impedance 50 ohms
Antenna Integrated chip antenna
Interface Data: UART, I²C, PCM/I²S
Advanced Feature MFi, Airsync, iBeacon, OTA(optional)
Temperature -20ºC ~ +85 ºC
Humidity 10% ~ 95% Non-Condensing
Environmental RoHS Compliant
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