DB006-BT691-USB Bluetooth Module USB Development Board


DB006-BT691-USB is a DA14531 BLE Module Testing Board USB Port. It's a development board designed for FSC-BT691 BLE Module.

Comparing with the bluetooth module itself, DB006-BT691-USB is much more convenient & easy for users to do testing. With the USB Port, the module can be connected to the computer directly, time saving, and ensuring the stability. Working with Feasycom's FREE UART tool, users can have the full control of the FSC-BT691 by using AT Commands.

Below you would find more features of the module FSC-BT691.

Basic Parameter

Bluetooth Module Model FSC-BT691
Bluetooth version BLE 5.1
Chipset DA14531
Dimension 10mm x 11.9mm x 2mm
Certifications FCC, CE, IC, KC, TELEC, SRRC (BT691+Shield Case)
Transmit power -19.5dBm ~ 2.5dBm
Interfaces UART, I2C, SPI
Profiles GATT Peripheral
Frequency 2.402-2.480 GHz
Power supply 1.65V-3.6V
Antenna PCB onboard antenna, supports external antenna
Power Consumption 1.6uA (Sleep Mode)
Storage Temperature -40°C to +85°C
Operating Temperature -40°C to +85°C

Main Features

  • Qualified Bluetooth v5.1 specifications
  • Postage stamp sized: 10mm x 11.9mm x 2mm
  • Low power
  • The default UART Baud rate is 115.2Kbps
  • GAP, ATT, GATT, SMP, L2CAP profiles
  • Bluetooth stack profiles: all BLE protocols
  • Support SPI, UART, I2C interface
  • Support the OTA upgrade
  • Integrated temperature sensor
  • Operating Temperature: -40°C to +85°C
  • Available certifications: FCC, CE, IC, KC, TELEC, SRRC


  • Medical application
  • Home Automation
  • LE HID, Beacon
  • Industrial
  • Low power sensors

Firmware Options

Firmware No. Application Profiles Support
FSC-BT691 Data GATT (Peripheral)
FSC-BT691 Data GATT (Client)
FSC-BT691 Other Customization


Type Title Date
User Guide Feasycom FSC-DB006 USB Bluetooth Dev Board User Guide April 8, 2022

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