App Support: Free iOS and for Android mobile App eWeLink Independent control: Control each gang separately in APP eWeLink. Sync Status: Real-time device status provided to App. Remote ON or OFF: Turn 4 electrical devices on or off remotely from anywhere. 3 Working Modes: Switch among interlock or self-locking or inching modes. Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electric curtain, etc. Timing: Supports 8 enabled countdown or single or repeat timing tasks to turn on or off at specified time. DIN Rail Mounted: Great for industrial control. Voice Control: Compatible perfectly with Amazon , for Google Home, for Google Nest,IFTTT Share Control: Control your smart home together with your family. Operating Temperature(recommended): -20-70Celsius Operating Humidity: 5 percent -90 percent RH, Non-condensing Wireless Standard: 2.4GHz, 802.11 b or g Security Mechanism: WPA-PSK or WPA2-PSK Product Size: Approx. 112 x 83 x 26 (mm) Power Supply: 85V-250VandRF colour:White Material:plastic Package Contents: 1 x 4CH Smart Wifi Switch Only the above package content, other products are not included. Note: Light 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.