The PCDMB31B is a 20A double pole switch with LED from the BG Evolve range, finished in matt black. The BG Evolve range is new on the outside with its polycarbonate front plates and contrasting frame, but has the same internal technology as the BG Nexus Metal range. With interchangeable front plates, the Evolve range allows you to move with the trends without losing the level of quality and reliability.