... Drive Power Supply 2.certification : CE,UL,TUV ,GS3.Input Voltage: AC85V~265V4.Isolated constant current output 320mA--600mA ... and long life design ,long life span , 2 years warranty The product specification:ItemSpecificationsModelRJ-9Modulation stylePulse ... Output voltage accuracy3%Voltage adjust rate2%Load adjust rate2%product size54X37X22mmproduct certificationCE,UL,TUV ,GS 9-12W drive power supply ...