certification : CE,UL,TUV ,GS high service ,high quanlity,OEM service compatible product :LED dimmer ... .LED Built-in Drive Power Supply 2.certification : CE,UL,TUV ,GS3.Input Voltage: AC85V~265V4.Isolated constant current output 320mA ... %Voltage adjust rate2%Load adjust rate2%product size54X37X22mmproduct certificationCE,UL,TUV ,GS 9-12W drive power supply (adjustable light)