LS30061WSIM Wireless wall switch moduleUse any 1 to 4 gang switch plate (25mm back box)Programmable switch functionsSlim (4mm) internal module for flush or surface mountingStandard AAA batteriesDimensions: 45 x 45 x 4mmRemote Control can be used for re-programming ( LS30050WRC )This wireless switch module provides the convenience of a standard wall switch without the mess of installation. Space permitting, the internal module can be installed behind any 1-4 way switch with a 25mm back box so that the front plate matches the decor e.g a chrome face plate. The internal module has 1000m range in line of sight obstacles such as walls will reduce the range by up to 50% each time. Each switch can be programmed to control the whole garden or a selected area. Multiple switches may be installed to operate as 2-way switches.The unit is factory pre-set to control zones 1 to 4 of a Light Symphony Control Unit, however it can easily be re-programmed to control different zones or whole garden On / Off with the Light Symphony long range remote control. Alternatively, the switch can be re-programmed via the internal programming key.Delivery within 2-3 Working Days