SAMLEX's SDC-23 step down converter featuring switch mode technology. Fully protected. Input 20 30 VDC, Output 13.8 VDC. 20 A continuous, 23 A intermittent This listing is for Each. DC Input Voltage Range 20-30 V DC Input Voltage 13.8 V Depth 2.5 Qty/ Uom 1 Each Maximum Intermittent Amperage 23 A Nominal DC Output Voltage 13.8 V Item Height 4.8 in Item Width 4 in Maximum Continuous Amperage 20 A