Knightsbridge SF4000MB Switch 3 Gang 2 Way 10 Amp Matt BlackIdeal for controlling 3 separate lights. 2 way switches are generally used when there are two switches controlling the lights. A typical example of this is when a room has two entrances (like a through lounge) where there is a switch positioned at either entrance. Made from high quality ultra slim, premium grade material. Complete with integral gasket. Compliant to all relevant British safety standards. Minimum mounting depth: 16mm. Dimensions: 87.5mm x 87.5mm. Supplied in retail blister with full fitting instructions. 15 year guarantee.