This sensor accurately measures temperature and humidity, which are important for a healthy living environment. Connect the device to other Shelly devices for seamless climate automation and ensure optimal comfort and well-being in your living area. No hub required! Easy control via the Shelly Smart Control app, as well as various protocols, platforms and voice assistants. Equipped with the new Shelly chip: 8MB memory and faster responsiveness Matter upgrade without compromising on functionalities Enhanced with a low power e-paper display and an integrated clock Batteries 4 x 1.5V AA (LR) batteries (not included) Works with USB Type-C slot Low battery consumption (up to 1 year battery life) Wall mountable Features an integrated web server and connects to your WiFi network WHY SHELLY DIMENSIONS (HxWxD): without stand 70x70x26 mm / 2.76x2.76x1.02 in with stand 70x70x45 mm / 2.76x2.76x1.77 in Ambient temperature 0°C to 40°C / 32°F to 104°F Humidity 30% to 70% RH POWER SUPPLY: Batteries 4 AA (LR6) 1.5V (batteries not included) USB Type-C power supply (cable not included) Estimated battery life Up to 12 months POWER CONSUMPTION: Power consumption Sleep mode =32µA SETUP MODE =76MA Frequency band 2400 - 2495 MHz Max. transmit power in frequency band WIFI RANGE (DEPENDS ON LOCATION): up to 50 m / 160 ft outdoors up to 30 m / 100 ft indoors Bluetooth protocol 4.2 BLUETOOTH RANGE (DEPENDS ON LOCATION): up to 30 m / 100 ft outdoors up to 10 m / 33 ft indoors CPU ESP-Shelly-C38F Flash 8MB Webhooks (URL actions) 10 with 2 URLs per hook MQTT Yes REST API Yes