The switch module features easy to fit and change, simply clip into place from the front of the mounting frame. The grid module clips to the frame without any requirement for special tools. It can be moved, removed or replaced whilst the frame is fitted to the box making installation or replacement speedy and simple. The simple clip fit mechanism holds to the mounting frame in order to place from the front. This switch does not have to be derated when used with fluorescent or inductive loads and is manufactured according to BS EN 60669-1:1999 standards.