The Pyle PSV300 30-Amp Heavy-Duty Switching Power Supply with Cooling Fan converts standard 120-volt AC household power to 13.8-volt DC power and can supply up to 30 amps of continuous power. The power supply features a regulated output voltage that makes it safe to use with mobile CBs ham radios CD players or anything you would power with a vehicle s DC electrical system. Universal hardwired screw-type connection terminals are hassle-free and ensure compatibility with a wide range of device equipment and components. Simple electronic plug-in operation provides a constant source of DC voltage allowing for quick and consistent power conversion. Switch-activated power control eliminates the need of an external battery or an additional power source—while the built-in electronic overload and short-circuit protection ensure safety of the operator and any connected electrical devices. This Compact Bench Power Supply makes for a great addition to any hobbyist work desk or equipment testing station.