Feasycom Bluetooth module

● 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 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. ● Support communicating with the FeasyBlue app and many other Bluetooth apps