Features: Radiator Thermostat: suitable for home heater equipments, convenient installation and simple operation. WiFi and ZigBee-versions and wireless-gateway for you to choose from. New TRV controller, rotatable screen which allows you to read from different angles, providing with much more comfortable user experience. Tuya Smart APP-control: You can control the temperature of your home, so that you can enjoy the most comfortable temperature when you get home. Voice Control: in addition to using phones or manually controlling products, you can also use control voice, free your hands and make your life more convenient. Programmable Function: you can set different programming modes for each day of the week according to your schedule, helping you save energy. Specifications: Material: ABS+PC+Metal Type: WIFI-version, Zigbee-version, Wireless Gateways(optional) Teparature Control Valve: Approx. 97x58.4mm/3.18x1.91ft Wireless Gateways: Approx. 60x60x15mm/2.36x2.36x0.59inch Battery: 3xAA Batteries (not included) Set Temp. Range: 5-35°C More Thoughtful Features: Child Lock: Prevent children from changing settings； Open Window Detection: screen displays "OP" and the temperature sets to 12℃ when window-open detected； Timing Start for Anti-scale: every monday at 12:00 to protect valve from calcification, "CR" will be displayed during decalcification. Package Includes: 1x Thermostatic Radiator Valve or Wireless Gateways(optional) note: The Zigbee-version temperature control valve need to be used with wireless-gateway. Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.