The relay carries ID KUP-14D15-24=KU, and you will find that it is easy to verify.
BODINE # GTD20A / EMERGENCY LIGHTING RELAY CONTROL DEVICE.
I keep a list of parts, and the model 1-1618002-8 is one I recognize immediately.
Once you look closely, the model DEK-OE- 12DC/ 48DC/100 is printed neatly.