Create an atmousphere with the Lightwave RF 1 Gang 250W Master Hard Wired On/ Off Dimmer The 1 gang dimmer switches can be installed into existing wall socket box Master switches are one way switches, to use on a two way circuit, add a slave switch at the other end of the circuit This can be controlled by PC or smartphone when used with the WIFI link controller 1 Gang 240 Volt 250 W Fits standard wall socket box 433.9 Mhz Flush mounted Download Lightwaver RF APP from your APP store Dimension: 88x 88x 30mm Hx Wx D Satin Steel