Sound sensor in PCB for LED lights: 1.Built in PFC 2.Effi ... be customized. Sound sensor LED Driver power supply for LED lights:·Universal AC input/Full range(up to ... ·Built in PFC function, PF>0.95 ·Suitable for all kinds of LED lightings, and moving sign applications. ... output current constant, no drift.3. High security, suitable for high humidity, high dust, strong vibration environment of use ...