... *120*93mm,led driver,led power supply;bigger one PWM design, make sure the stability and high efficiency of power ... passed EMC test, wave less than 20MV.*3, Efficiency above 80%, exotherm less than 25 degree*4, Function ... assume stable power supply for LED lightings to reach long lifetime and reduce led light decay.*6, Input Voltage ... power supply,size;170*120*93mm,led driver,led power supply;bigger one