These JSJSLW381 LightwaveRF Remote Control Plug in Sockets sockets can be plugged into your existing wall socket. Your appliance or lamp can then be switched on or off using the handheld remote control unit included. The sockets can also be remote controlled by using a Smartphone or web enabled device (when used in conjunction with the WIFI link).   Key Features 240 Volt 13A 1 Gang 3000W Fits standard wall socket Frequency: 433.9 MHz. Includes 3 x 1 Gang sockets. Includes Handheld Remote Control.   You can download LightwaverRF App from Apple App Store or Google Play Store.   These sockets differ from standard LightwaveRF plugin sockets by: They can only be paired with up to 3 channels (vs 6) They don\'t have mood functionality They cannot be locked/unlocked