Supports WiFi network. Supports numerous WiFi smart switches control by one smart phone. Supports status tracking: device status timely provided to the app. Supports remotely turn on or off connected home appliances, for example light, electric kettle, electric rice cooker, electric curtain, etc. Supports max 8 enabled scheduled/countdown/loop for each device. oltage: AC90-250V 50/60Hz Power: 4000W Current: 30A WIFI frequency:2.4G. IEEE 802.11 b/g Remote control frequency: 2.4Ghz Remote Controller Colour:Black Material:ABS Package Contents: 2x WIFI smart remote control 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.