FSC-BT691is an ultra-low-power Bluetooth module that uses the Dialog BLE 5.1 chip DA14531, supports UART/I2C/SPI interfaces.
FSC-BT691is an ultra small size Bluetooth 5.1 module with onboard antenna. Its ultra-small size is only 10mm * 11.9mm * 2mm, which provides users with ultra-high flexibility and multiple possibilities.

FSC-BT691 Ultra-small size BLE 5.1 module's technical parameters:

Bluetooth module model: FSC-BT691
Bluetooth version BLE 5.1
Chipset DA14531
Dimension: 10mm x 11.9mm x 2mm
Interfaces: UART, I2C, SPI
Profiles: GATT Peripheral
Frequency: 2.402-2.480 GHz
Transmit power: -19.5dBm ~ 2.5dBm
Power supply: 1.65V-3.6V
Antenna: PCB onboard antenna, supports external antenna
Power Consumption: 1.6uA (Sleep Mode)
Storage Temperature: -50℃ to +150℃
Operating Temperature: -40℃ to +85℃

Applications

Beacon
Medical application
Disposables
Proximity Tags and Trackers
Smart Watches
HID Device (Human Interface Device)
Industrial Applications