Power Supply 4Fuse 24Vac @ 3.5A, Type CCTV AC, Wall Mount, Material Steel, Finish Gray, Enclosure Depth 3.50 In, Enclosure Width 7.50 In, Enclosure Height 8.50 In, Input Voltage 115VAC, Voltage OUTPut 24VAC or 28VAC, OUTPut Current 24VAC @ 3.5A or 28VAC @ 3A Amps, Input Frequency 60 Hz, Standards UL 2044 Commercial CCTV, CUL, CE, Includes Spare Fuse