1. Stylish Design: This smart thermostat radiator is a patented new TRV controller with LED dot matrix display, rotatable screen, allowing you to read from different angles, providing a more comfortable user experience. 2. Ultra-long Battery Life: This straight-through valve actuator needs three AA alkaline batteries for power supply (not included). The special valve used in conjunction with the radiator greatly reduces power consumption. The measured power consumption per day is 23.592mAH, and it can be used About 76 days. 3.Alexa And Google Home Compatible: Use simple voice commands for house temperature control, use more convenient life experience by adding our smart radiator valve controller to Smart Life APP and then connect through Alexa or Google Home . 4. Programmable Schedule: Supports manual setting of weekly schedule, 4 periods per day, and custom schedule for your house temperature. Automatic mode, manual mode and on/off mode are optional; the APP has the function of setting upper and lower temperature limits, which saves energy in a real sense. 5. High-quality Service: The quality of our products has been strictly inspected, you can buy with confidence, if you have any questions, please feel free to contact us, we will provide you with high-quality services and strive to solve your problems. Description Power Supply: 3pcs 1.5 V AA Batteries(not included) Accuracy: 0.5C Set Temp. Range: 5~35 C Storage Temp.: -5~ 45 C Surface Temperature:90 Max(at the radiator) Connection:m30*1.5mm Linear Travel:4.3mm Dimension:58.4*97*58.4mm Weight:117.7g Protection Class: IP 20 App: Tuya Smart/Smart Life Specifications 1.ZigBee Smart Long Battery Life Thermostatic Radiator Valve with Tuya ZigBee Hub Required:This is the new ZigBee type as ultra-low power ZigBee technology with Tuya ZigBee hub required for higher compatibility than other hubs for simple Tuya Smart APP access,wireless controlling your house radiator valve no matter where you are via smart phones with Auto and Manual mode optional in APP to enjoy the most comfortable temperature and cost-saving way without purchasing a hub;together with anti-scale for preventing minerals in the water from clogging the valve. 2.Alexa and Google Home Compatible:Using simple voice command for house temperature control for more convenient life experience by adding our smart radiator valve controller into Smart Life APP before being linked by Alexa or Google Home. Package Included: TRV*1(battery not included) User manual*1 Adapters*6