The Extech 382213 is a professional triple-output benchtop DC power supply featuring a digital 3-digit LCD display for precise monitoring of voltage and current. It delivers an adjustable 0–30V / 0–3A output plus independent fixed 5V and 12V outputs — ideal for powering TTL/CMOS circuits, prototyping, and multi-voltage testing. Includes overload/short-circuit protection, constant voltage/current modes, and front-panel LED indicators for current limiting.