This item is a universal switch for your smart home system to remotely and automatically turn on/off any appliances by phone eWelink APP. When the temperature of the environment falls within the range, it will automatically turn on or off the connected devices. It also supports timing turning on/off the appliances and supports presetting the range for temperature. Input voltage: DC 7-32V/AC 85-250V, USB 5V input. Output: Signal output only, no voltage output. Input current: Max 10A Wireless Standard: 2.4GHz, 802.11 b/g/n Security Mechanism: WPA-PSK/WPA2-PSK Control mode: EWeLink APP Platform: for Android, for iOS Gang: 1 Humidity: 5%-90%RH, Non-condensing Operating Temperature: 0°C-40°C Colour:White Material:plastic The printing/appearance may vary from batch to batch, but will not affect the use<br><br>Package Contents: 1 x Smart Temperature Switch 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.