Bluetooth-controlled temperature and humidity sensor. Detects and reports temperature and humidity. Protection class IP54 - splash-proof and dust-tight. Long battery life of up to 3 years. Power supply: 1 x 3 V CR2032 battery (included). Beacon mode (can be used for presence detection). No hub required, easy control via the Shelly Smart Control App, BTHome protocol, or various platforms. The Shelly BLU H&T is a splash-proof and dust-tight Bluetooth sensor that accurately measures temperature and humidity levels, both of which are crucial for maintaining a comfortable and healthy environment. When combined with additional Shelly devices, it enables seamless automation of climate control. Additionally, it enhances overall comfort and well-being in your home.