Shelly BLU Door/Window Sensor

The Shelly BLU Door/Window Sensor is a Bluetooth-operated device designed to detect the opening and closing of doors and windows, as well as measure tilt angle and luminosity. It operates on a 3V CR2032 battery, offering up to 5 years of battery life. The device is compatible with the Shelly Smart Control app and various platforms, allowing integration into home automation scenarios and scenes. Shelly, the brand behind this product, is a Bulgarian company specializing in smart home devices, and the product is manufactured in multiple countries.