Universal Compact Bench Power Supply - 18 Amp Linear Regulated Home Lab Benchtop AC-to-DC 12V Converter w/ 13.8 Volt DC 115V AC 450 Watt Power Input, Amperage Gauge Display, LED - Pyramid PS21KX CONVERTS AC TO DC: The Pyramid Bench Power Supply features linear / regulated design. Provides convenient and reliable AC-to-DC power conversion (12V DC) w/ constant source of DC voltage. Works w/ cellular phones, CB radio, scanner, HAM radio, etc SCREW-TYPE TERMINALS: Features universal hardwired screw-type connection terminals that ensure compatibility with a wide range of devices, equipments and components. Used for component and device equipment testing, operation and performance PLUG-IN OPERATION: The simple 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 additional power source SHORT-CIRCUIT PROTECTION: Equipped w/ built-in electronic overload and short circuit protection to ensure safety of the operator and any connected electrical devices. Also fuse protected w/ auto reset. Perfectly safe for tabletop or desktop placement BUILT-IN COOLING FAN: The power converter features a cabinet heatsink and a built-in cooling fan to prevent the device from overheating. Constant amperage is 18A and surge is 20A w/ power output of 13.8V DC and 115V AC 60Hz 450W power input