possible date made: 1940s
where made: Swissvale, PA
model name: DN-22
serial number: Y62127
Material
Glass
Color
Black
General Notes
Note
A switching relay used for railroad communications, signals an approaching train triggering crossing arms & blinking lights, this DN-22 relay was in use through 1995, RES 1000 OHMS, 1.88-3.76 volts, .0019-.0038 amps.