... board service Silicon controlled dimmer power supply,(4-7)*1W drive power,Waterproof power supplyItem: HC-LED-001 inpout voltage: AC110 ... : acuity 85% PCB size(L*W*H): 55mm*20mm*18mm drive power: (4-7)*1W Remark:supporting by Silicon controlled dimmer ... are dimming Silicon controlled dimmer power supply,(4-7)*1W drive power,Waterproof power supply