The MFJ-4245MV is a switching power supply with variable output voltage with 3 Year RW Antennastore warranty. This Power Supply offers 45 Amps max. or 40 amps continuous. Features a easy access front-panel voltage control which varies output voltage from 9 to 15V DC. Front-panel mounted 5-way heavy-duty binding posts and cigarette lighter socket for mobile accessories. It also has two sets of quick-connects on the rear for accessories. Dual 3 in. illuminated meters monitor load voltage and current. Internal fan cooling. Dim: 7.5″w x 4.75″h x 9″d; 5.5 lbs.