Simplex 2098-9642 Category : Simplex This is a combination of a smoke and heat detector. Brand SimplexModel 2098-9642Manufacturer HochikiType Alarm (Smoke/Heat Detector)
Space Age AV32+2DCD Category : Space Age ElectronicsThat is an electromechanical horn on the rear of the strobe plate.
Wheelock ET-1080 Category : WheelockThe white and red versions of this speaker both have the same model number.
