TRV supports multiple voice platforms, you can directly use voice to control the device. The intelligent scene makes your life easier. It is easy to install it: Unscrew the adapter and put in to the valve, then tighten the adapter, and rotate the temperature control body onto the adapter. With LED display screen, so you can see the data more clearly, which can give you a better using experience. You can control the temperature through the APP of your phone, even you are away from home, you do not need to worry about forget to adjust the temperature. temperature control function, you can set the different product of different temperature, which can give you the more humanization experience. This product is an vital tool for your to achieve your intelligent life. With this product, you can control the temperature of the device, which can be achieved through your phone, it is easy to operate, and try it, it not let you down. This product can intelligently control the device through APP after connect it to ZigBee. Working voltage: 1.5V Temperature control range: 5℃-35℃ Temperature accuracy: ±1℃ Stand-by power consumption: 3uW Starting power consumption: 0.3W Networking method: Zigbee 2.4G Adapter: M28, M30, RA Noise: less than equal 30dba Connect way:M30x1.5mm Item size:94x 58x58mm/3.7x2.3x2.3in Item weight:195g/6.9ounce Color:White Material:plastic Package Contents: 1 * Radiator thermostat 1 * English instruction manual 1 set * accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.