Simplex 2098-9642 Category : Simplex This is a combination of a smoke and heat detector. Brand SimplexModel 2098-9642Manufacturer HochikiType Alarm (Smoke/Heat Detector)
Wheelock MT-12/24 Category : WheelockThis signal, I believe, can be used for general application purposes, as well as fire protection.
Simplex 4904-9103 Category : SimplexThis is the ceiling-mount version of the Simplex 4904-9101 remote strobe.
