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 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 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 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