Feasycom DB004-BT836B Bluetooth 5.0 Module

The Feasycom BT836B is a dual mode (BR/EDR+BLE) Bluetooth 5.0 module that can be used for high speed data transfers. It supports SPP, HID, GATT, ATT, GAP. Furthermore, this module supports MFi, Airsync, iBeacon and OTA (Over-the-air) upgrade.

Specifications:

• Supply voltage: 3.6 - 6V DC
• Data voltage: 3.3V
• UART interface (RX and TX)
• Dimensions PCB: 36 x 15 mm

For more information, see the following page: FSC-BT836B

This video explains how to upgrade the firmware (OTA): Upgrade Bluetooth Module Over the Air (FSC-BT836)
The DFU files can be found in the "Downloads" tab.