This switch module features a stylish slimline design frontplate profile that is only 1.5mm and manufactured according to BS EN 60669-1:1999 standards. The design is smooth, clean and the product is very slim. It is designed to inhibit access to the electricity supply, unless all 3-pin of a standard British 13A plug are in position. Terminal screws are backed out and captive and are upwards facing to make installation easier.