... circuit electronic board service Silicon controlled dimmer power supply,(4-7)*1W drive power,Waterproof power supplyItem: HC-LED-001 inpout voltage: ... % PCB size(L*W*H): 55mm*20mm*18mm drive power: (4-7)*1W Remark:supporting by Silicon controlled dimmer, ... led lamp bead,it doesnot stroboscopic when you are dimming Silicon controlled dimmer power supply,(4-7)*1W drive power,Waterproof power supply