The Pyramid power supply provides convenient and reliable AC-to-DC Power performance. Universal hardwired Screw-Type connection terminals are hassle-free and ensure compatibility with a wide range of device equipment & Components. The 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 additional power source -- while the built-in electronic overload and short-circuit protection ensure the safety of the operator & any connected electrical devices. The Pyramid variable bench power supply makes for a great addition to any hobbyist out desk or equipment testing station. Provides convenient and reliable AC-to-DC power conversion w/ constant source of DC voltage. Works w/ cellular phones, CB radio, scanner, HAM radio, etc | USB AND SCREW-TYPE TERMINALS: This workbench linear variable power supply features dual USB charge port and universal screw connection terminals compatible w/ a wide range of device/equipment. Used to test device/equipment 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 for an external battery or additional power source | SHORT-CIRCUIT PROTECTION: Equipped w/ built-in electronic overload and short circuit protection to ensure the safety of the operator and any connected electronics. Has rugged and durable housing construction safe for benchtop or desktop placement | AMP GAUGE AND VOLT METER DISPLAY: This DC bench power supply is equipped with rotary control for the adjustable power supply DC and analogue gauge amperage and voltage metered display for easy operation