CONVERTS AC TO DC: The Pyramid Bench power supply features a 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, equipment, and components. Used for component and device equipment testing, operation, and performance