... PWM design, make sure the stability and high efficiency of power supply.*2, Anti-jamming, passed EMC test, wave less than ... , Constant voltage output, assume stable power supply for LED lightings to reach long lifetime and reduce led light decay.*6, Input Voltage ... us the output voltage when you place the order) Output power:500w*7, Non-waterproof*8, CE & ROHS certificate*9, Working ...