This is a smart device that can be remotely controlled through a WiFi network with a specific frequency. This product does not require a gateway, it can be connected to a WiFi router separately, and the on/off function can be remotely controlled through the mobile APP, or it can be manually touched Voice control: Once you have this switch, you can connect it with ( / dot / tap) or Assistant for voice control. Wi-Fi remote control: You can use the "Smart Life" application ( or Play) in your smartphone to wirelessly control the wall switch via Wi-Fi or 4G network. No hub is required. Timing function: Through the timing , you can completely control the lighting in the home or office, so that you can plan the exact time to automatically turn on and off the lighting and electrical appliances. This smart lighting switch has multiple control points, which are shared by different users with family members. Operating mode: contact-sensitive Switch output:5A x 3 Rated Voltage: AC 85-230V +/-10% ;50/60Hz Wireless Type: 2.4GHz Protocol: IEEE 802.11b/g Wifi distance:45m Free app:Tuyasmart or Smart Life. Support systems: Android and IOS. Workes with Alexa and home. Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Voltage: AC110-230V colour:White Material:ABS size:74 x 37 x 120mm Package Contents: 1 x Wall Light 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.