... test Application: LED tube, LED bulbs, LED lighting, ceiling Led power lightingDesigned based on UL/CE standardsConstant current driver, Open/short ... special requirements 2Power:1*1W, 3*1W,1*3W,(4-7)*1W,4*1W, 5*1WPower factor >0.85Constant current accuracy,300mA ... current can be adjusted according to customer's demands LED power supply