The TMR 4-1222 from Traco Power is a DC to DC Converter with Input Voltage 9 to 18 V, Output Voltage 1 12 V, Output Current 1 0.166 A, Output Power 4 W, Output Voltage 2 -12 V. Tags: Through Hole, Buck-Boost. More details for TMR 4-1222 can be seen below.