The RS3-2412SZ/H3 from Recom Power is a DC to DC Converter with Input Voltage 9 to 27 V, Output Voltage 1 12 V, Output Current 1 250 mA, Output Power 3000 mW, Operating Temperature -40 to 71 Degree C. Tags: Through Hole, Buck-Boost. More details for RS3-2412SZ/H3 can be seen below.