Input voltage/frequency: 110VAC/220VAC / 47~63Hz - starting inpulse current: 8A@120VAC (cold boot) - output adjustment range: 0V~15VDC / 7V~15VDC (±10% rated output voltage) - starting temperatrue of draught fan: 45’C - over heat protection: 70’C - output starting time: <=2S@120VAC <=1.0S@230VAC - Output hold time: >=10mS@120VAC>=20mS@230VAC - PWM design to ensure stable and efficient power - More than 80% efficiency - Over-voltage protection 115%~135% short circuit protection over-load protection 105%~200% - Constant output stable power with long life - working environment:-10'C~50'C; 20%~90%RH