Shelly BLU Bluetooth Operated Door/Window Sensor Black

The Shelly BLU Door/Window Sensor (Black) is a device that can automatically detect and report the opening or closing of doors and windows. With both tilt angle measurement and a light level sensor, the Shelly BLU can keep a close eye on your doors and windows and report them immediately, while also being capable of integrating with other Shelly devices to turn on lights or activate alarms.