The environmentally sealed converter reduces truck battery volts to a 12 V output to supply power for vehicle lighting and accessories, including head lights, warning lights, blowers, windshield wipers and horns. Voltage Input Range : 24 to 48 and 72 to 80 volts Voltage Output : 12.5 volts DC Current Rating : 16 amps continuousFrequency : Constant - 15 kHz Ambient Temperature : 0° to 40° C Input Filter : Included for use with SCR and transistor traction controls