Power Supply 12Vdc Or 24Vdc @ 4A Supervised, Type Power Supply/Charger Board, Material Phenolic or Fiberglass, Length 7.00 In, Width 4.00 In, Height 1.55 In, Input Voltage 24VAC to 28VAC, Voltage OUTPut 12VDC or 24VDC, OUTPut Current 4A Amps, Input Frequency 60 Hz, Includes Battery Leads, Tape