FSC-BT618 is a wireless microcontroller (MCU) BLE module targeting Bluetooth 5.2 Low Energy applications. Very low active current and low-power mode current consumption provide excellent battery lifetime and allow for operation on small coin cell batteries and in energy-harvesting applications. FSC-BT618 contains unique ultra-low power sensor controller for interfacing external sensors and for collecting analog and digital data autonomously while the rest of the system is in sleep mode. It supports advanced BLE 5.x features: High Speed with LE 2Mbit PHY, Long Range with LE coded PHY, 255 Bytes Advertising extensions, GAP, ATT/GATT, SMP, and L2CAP profiles. With Feasycom firmware, developers can control all Bluetooth functions by simple UART AT commands.