The DRF40R24S12 from Calex Manufacturing is a DC to DC Converter with Input Voltage 9 to 36 V, Output Voltage 1 12 V, Output Current 1 3.3 A, Output Power 40 W, Isolation Voltage 2.5 kV. Tags: Chassis Mount, Buck-Boost. More details for DRF40R24S12 can be seen below.