Features:*Anti-freeze function: This controller is designed with an anti-freeze function. If the water and gas-boiler is not turned on for a long time, the thermostat will automatically turn on in a short time.*Apps and manual controls: You can use manual touch control, or wirelessly control connected devices via the apps if you are not hot enough to use manual touch.*Adjustable backlight brightness: This temperature controller has a digital display, and the backlight brightness can be adjusted or turned off to avoid disturbing sleep.*Weekly programmable: 5+2/6+1/7 days per week, 6 periods on working days, 2 periods on rest days, supports different temperature designs and operates as planned.*Battery powered, no AC-installation required: This controller is powered by 3*AA batteries (not included), no separate AC-power required, easy to install.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: ABSSize: 86*86*28mmPower supply method: 3*AA batteries (not included)APPs: Smart Life/Tuya-SmartTemperature sensor: NTCsTemperature accuracy: 1Upper and lower temperature limits: 15~95Own power consumption: <170uWLoad current: 3A (resistive)Protection level: IP20