The UI40-28SB from Polytron Devices is a AC to DC Converter with AC Input Voltage 85 to 264 V, AC Input Current 500 to 1000 mA, DC Input Voltage 120 to 370 V, DC Output Voltage 28 V, DC Output Current 1.43 A. Tags: Chassis Mount. More details for UI40-28SB can be seen below.