... channels, 5A per channel. 4. On/off switch RGB LED Controller Model NumberCT309Power outputPower outputVoltageDC 12~24VStandby Power0.5WSize211(L)X40 ... switch. ApplicationsBuilding Decoration: Business spaces, airports, subway;Indoor Decoration: Lighting and back lighting for hospital, hotel, marketplace, square, dining-room, pub and ... , signboard and billboard;Be used as big area back lighting source.