This item is a universal switch for your smart to remotely and automatically turn on/off any appliances by phone APP. When the temperature of the environment falls within the range, it 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, USB 5V input. Output: Signal output only, no voltage output. Input current: Max 10A Wireless Standard: 2.4GHz, 802.11 b/g Security Mechanism: WPA-/WPA2- Control mode: APP Platform: for Android, iOS Gang: 1 Humidity: 5%-90%RH, Non-condensing Operating Temperature: 0C-40C Colour:White Material:plastic The printing/appearance from batch to batch, but not affect the use Package Contents: 1 x Smart Temperature Humidity 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.