... repeated switch current suddenly,which prolong the life of the LED light.5,Aluminum alloy sealied waterproof housing, waterproof, moistureproof, ... and output voltage according to the LED number in series terms. When customs design the lamp board,they must consider the connected ... firstly2,PC**** Series power supply, mainly for the street lamp, project-light lamp and scenic spot lighting, etc.3,0-40°C ...