The L-Tek FF1502 is a Bluetooth Low Energy (BLE) device which operates as a broadcaster, i.e. beacon. Beacons are typically low power devices which sleep most of the time and wake-up for a short period of time to broadcast a message.
The FF1502 is a miniature device (very small form factor) and is powered by a single CR2032 coin cell battery. It is based on the Nordic nRF51822 MCU (Cortex-M0) with an integrated Bluetooth radio and various sensors (temperature, humidity, light, accelerometer, gyroscope, magnetometer) connected via I2C. Sensor data is read periodically and broadcasted via BLE.
During run-time, the application sleeps most of the time with the MCU and all sensors being in low power mode. Every ten seconds, it wakes-up periodically and reads the sensors (temperature, humidity and light). Then, the sensor data is broadcasted via BLE and the device goes back to sleep again.