Regulated 50 Amp Compact Power Supply 13.8Vdc (9-15V Adj) w/ Volt - Amp Meter! Super Compact Size! Great For High Power Amateur & Two Way Radios! Heavy Duty Rear 50A Red/Black Output Terminals, Front 10A Accessory Socket & Meter Too! Can Be set to Fixed 13.8Vdc , or Adjustable 9-15Vdc. Meter Switchable For Volts or Amps. Noise Offset control, Short Circuit & Current Limiting Protection, Fully Regulated & Filtered! Input 110v-125Vac house current. Output DC 13.8V (or 9-15V adjustable), includes AC Power cord.