ZigBee Smart Thermostat With OLED Display Application & Voice Control Indoor Constant Temperature Controller Programmable Child Lock Thermostatic Radiator Valve Description: This product is a smart thermostat with ZigBee, low power consumption, suitable for water system plumbing control valve controller. Supporting remote control by application is more convenient and easy.   Features: [Smart Control]Supporting remote control by application, voice control by Amazon Alexa, and Assistant. [Child Lock]Smart thermostat cannot be controlled while the child lock activated, avoiding misuse of children due to curiosity. [Programmable]Programmable device with customized exclusive temperature plan, up to 6 events allowed to be set each day. [Energy-saving]After no operation for more than 5s, the device enters sleep mode, which can save energy and prolong battery life. [Open Window Detection]Automatically stop heating when the open window is detected. Save more on your heating bill. Specifications: Color: White Material: PC Setting Range: 5-35°C Environment temperature: 0 to 50°C Surface temperature: Max 90°C Input Current: 100mA conservation class: IP20 Battery: 3*1.5V AA Battery (not included) Function: Child lock, antifreeze, low battery reminder, etc Package Size：11.2*7*6.6cm Package Weight: 215g Packing List: 1 * Smart Thermostat 1 * User manual Note: Please purchase the Tuya ZigBee gateway separately.