Wheelock RSSP-121575W This strobe plate runs off of 12 VDC. Brand WheelockModel RSSP-121575WManufacturer WheelockType Alarm (Strobe)
RSG RMS-1T Category : RSGEither this is an early generation RSG T-Bar or some unique variant of the more common RSG RJRMS-1T-KL.
Simplex 4904-9101 Category : SimplexThis is the same strobe that is found on the Simplex 4903-9101 strobe plates.
