The SRS-1209 from Mean Well is a DC to DC Converter with Input Voltage 10.8 to 13.2 V, Output Voltage 1 9 V, Output Current 1 0 to 56 mA, Output Power 500 mW, Operating Temperature -25 to 71 Degree C. Tags: Through Hole, Buck/Step down. More details for SRS-1209 can be seen below.