Input: 110 VAC 60Hz Output: 0-30VDC @ 0-3A Constant Voltage or Current Specifications/Features: True Constant Current (Can drive a short). Enclosed Linear bench supply with dual LED displays for output Volts & Amps. .01% +3mV Line /.02%+3mV Load regulation, <1mV RMS ripple. Front binding posts. Internal Temp. controlled fan L: 11-1/4" W: 5-3/16" H: 6-1/4" WT: 12