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)
Edwards 276B-1320 Category : EST/EdwardsThis is essentially the single-action, non-addressable version of the EST SIGA-278.
Simplex 4259-25 Category : SimplexThis is a photoelectric smoke detector from the mid to late 1970’s.
Notifier N-ANN-80 Category : NotifierThis device is part of a permanent mini system installed in my house.
