Color White. Style Radiator Valve Power Source Battery Powered Controller Type Amazon Alexa, Google Home Voltage 15 Volts Connectivity Protocol ZigBee, Wi-Fi Control Method App See more About this item 【Complement to the Starter Kit】 Do you already own a KETOTEK Radiator Valve Starter Kit? Now you can heat even more radiators and rooms in your home intelligently with our KETOTEK radiator thermostats to control the heating room by room. These additional Zigbee Radiator Valves can only be used with the Tuya Zigbee gateway, which is already included in the starter kit. 2.4G WiFi network required. 【Flexible Control】 Set the temperature on the radiator thermostat itself, or via App and voice control via Tuya Zigbee gateway. The Smart Life/Tuya app allows you to remotely control your Zigbee Radiator Valve room by room or create a group to control them together. Use voice commands to make temperature changes in individual rooms or groups of rooms. Fully compatible with Alexa, Google