... mode:IsolationTechnology:no PFC,constant current,triac dimmable led dirver,Spot lamp drivercurrent accuracy:400-420mA ≤± ... , EN61000-3-2 , IEC/ EN60968-1:2004+A1:2006 , IEC/EN60968-2-1:1989User guide:Our ... time to reslove it .1. application for LED tubes , led bulbs , led lighting , E27, E24, MR16 spot light PAR30 ... UL/CE standard.4. Constant current driver 1-9W LED light.5. Open / short / over-current ...