The P51-12 from Polytron Devices is a AC to DC Converter with AC Input Voltage 105 to 125 V, DC Output Voltage ±12 V, 5 V, DC Output Current -0.06 to 0.25 A, Line Regulation Voltage 0.0002, Load Regulation Voltage 0.001. Tags: Chassis Mount. More details for P51-12 can be seen below.