R311G -Wireless Light Sensor
R311G has a built-in photosensitive sensor, and it is used for the detection of ambient light intensity. It can work with other devices to perform wireless dimming functions, and the wireless communication is based on LoRaWAN™ protocol (ClassA). R311G is an ambient light sensor which reports the light level periodically.
2 x CR2450 3V button batteries
Simple operation and device configuration
Reports battery voltage and light level