GENSSI 480W LED Power Supply Regulated 12V 40A AC-DC CCTV 480 Watts Maximum Output DC regulated power supply 10% +/- Adjustable Voltage Rated; Input Voltage Range 85 to 132VAC/180-264VAC selected by switch, 47-63Hz 254-370VDC Perfect for LEDs or Other 12V Devices such as CCTV or DIY projects that require a powerful power supply Fan Cooled (Fan may only turn on when needed) ; High quality long lasting design; Ripple & Noise (max) 240mVp-p ; Efficiency 84% Pack of 1; Saftey Standards Design refer to UL1950 Design refer FCC PART15 J Conduction class A