The 24S12.20QMW from Calex Manufacturing is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 12 V, Output Current 1 20.5 A, Output Power 250 W, Isolation Voltage 2.25 kV. Tags: PCB Mount, Buck-Boost. More details for 24S12.20QMW can be seen below.