Wi-Fi Operated.Connect Shelly H & T to your Wi-Fi network. No HUB required!. Temperature monitoring. Be aware of temperature fluctuations and keep your home comfortable at any time. Low battery consumption. Over 1-year life of the batteries thanks to low consumption. Shelly H & T can be powered with a USB cable as well. Free data history. Shelly H & T features up to 1 year of free data storage for analysis and statistics. Humidity sensor.Monitor changes in humidity levels to avoid dryness and mold growth. Scene activation. Set Shelly H & T to activate various scenes based on pre-set conditions.