ZigBee Radiator Thermostat Heating Temperature Controller ZigBee 3.0 TRV Temperature Control Gauge Thermostatic Radiator Valve Intelligent Mobilephone APP Control Voice Control Compatible with Amazon Alexa home (Need to be Used with Gate-way) Features: Smart Radiator Thermostat: mini size design and 2 * AA batteries powered(Not Included), with clear LED data display for easy reading; For using cooperatively with heating radiator to control the closing and opening of the pipe for more convenient room temperature control. A ZigBee Wireless Gateway Hub is a Must for the ZigBee Version: required a ZigBee Wireless Gateway Hub(Not Included) to connect the valve to many other ZigBee smart products and realizes the whole linkage of your smart home devices. Simply add your gateway to the APP, then add your radiator thermostat to your gateway in the Smart Life APP. Smartphone APP Remote Control: remotely control your home temperature to attain advanced comfort via smartphone APP(/Smart Life) , and you can remotely adjust the temperature anytime anywhere, no matter you are at home, in your office or on the way home. Flexible Voice Control: Compatible with Home/ Alexa. With this smart radiator thermostat, you can set the most comfortable temperature for your house by giving a voice command to the smart home system, which helps a lot when your hands are busy. Weekly Programmable for More Convenience: supports manual set up 5+2, 7 days weekly schedule with 5 periods for option, providing you with the maximum convenience for different situation and setting customized schedule for your house temperature. Holiday mode, automatic mode, and manual mode available for added convenience. Specifications: Version: Zigbee / BT (Optional) Material: PC RF: ZigBee Frequency: 2.4GHz Power Supply: 2 * 1.5V AA Battery (NOT included) Temperature Range: 5-30°C Degree of conservation: IP20 Maximum Radiated Power: 10dBm Working Temperature: -10°C~40°C Working Environment: Indoor Item Size: 112 * 50 * 36mm / 4.41 * 1.97 * 1.42in Item Weight: 190g / 6.70oz Package Weight: 228g / 8.04oz Package Size: 15.2 * 6 * 6cm / 5.98 * 2.36 * 2.36in Package List: 1 * Thermostat 1 * Manual (English) Note: The ZigBee Version need to be used with Gate-way(NOT included)