Description: Maximum thrust: 80N Transmission temperature range: -10~60 C Power: 3 (AA) * 1.5V LR6 Communication frequency: 2.405-2.408GHz Maximum stroke: 5.0mm Working environment temperature: 0-50 C Temperature setting range: 5-35 C Size: 55mm * 86.5mm Features Zigbee intelligent constant temperature radiator ZigBee3.0 protocol, you can quickly add it to the Tuya zigbee hub with just one click on the application to pair WiFi Intelligent TRV Thermostatic Valve No need for a Zigbee hub, it can be directly connected to your 2.4G WiFi router APP/Voice Control smart Life/Tuya APP remote control anytime, anywhere Collaborating with Alexa and Yandex AliceFree your hands and make your life more convenient. Three modes available: manual mode, automatic mode, and temporary program mode Programmable function: 5+2/6+1/7 days per week, 6 working days and 2 rest days, supporting different temperature settings and running according to plan Frost prevention function: If the water gas boiler is not turned on for a long time, the temperature controller will automatically turn on for a short period of time Temperature calibration function: When there is a temperature difference, the calibration function can be used Sleep function: When the thermostat is in sleep mode, it cannot be controlled by the application program Child lock: locking function to prevent accidental operation by children Group control function: achieving group control of different rooms in special scenarios Home sharing function: Creating smart homes with family members through the smart life app Package Included: 1 * (1 smart thermostatic valve)