This part is a kind of semiconductor called KLT1C15DC12.

Function of this product has Relays.

Manufacturers : Hasco

Image and pinout :

Some of the text within the PDF file :

UM2100 SERIES 2 Watt DC-DC Converters ♦ 24-Pin Dip Package ♦ High Efficiency (up to 80%) ♦ Regulated Outputs ♦ Pi Input Filter ♦ 3000 VDC Isolation ♦ Continuous Short Circuit Protection ♦ Conductive EMI Meets CISPR22 Class A SPECIFICATIONS All specifications are typical at nominal line full load, and 25°C unless otherwise noted. INPUT SPECIFICATIONS Input Voltage Range .………………….. 5V .……… 4.5-5.5V 12V …….……. 9-18V 24V .…….…. 18-36V 48V …….….. 36-72V Input Filter .……….……………………...…… Pi Network OUTPUT SPECIFICATIONS Voltage Accuracy .…………..…….…………... ±2.0% max. 1 Voltage Balance (Dual) …….…………...…... ±2.0% max. Ripple and Noise, 20MHz BW .……….… 60mV P-P ma [ ... ]

UM2125 PDF Datasheet Download