Simplex 4904-9137 Category : Simplex This is, in fact, a Simplex 4904-9137. It’s just missing its housing. Brand SimplexModel 4904-9137Manufacturer SimplexType Alarm (Strobe)
Cerberus Pyrotronics U-MHT-S17 Category : Cerberus PyrotronicsI am not 100% sure of the differences between the U-MMT and the U-MHT since I could only find it’s...
Simplex 4259-25 Category : SimplexThis is a photoelectric smoke detector from the mid to late 1970’s.
