The Tripp Lite PR40 is a space-saving power supply that provides precise DC power from an AC source. It efficiently converts 120 volts AC into 13.8 volts DC. It has a high power density that makes it perfect for a range of applications, like 150/200 watt transmitters, aquariums, VHF/UHF ham radios, commercial/land-mobile radios, point-of-sale displays, low power linear amplifiers, and test bench equipment.