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FSC-BT691 is an ultra-low-power Bluetooth module that uses the Dialog BLE 5.1 chip DA14531, supports UART/I2C/SPI interfaces.
FSC-BT691 is an ultra-low 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.



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 Server/ GATT Client optional |
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℃ to +85℃ |
Operating Temperature | -40℃ to +85℃ |








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