Simplex 4902-9717 This is a TrueAlert speaker. Brand SimplexModel 4902-9717Manufacturer SimplexType Alarm (Speaker)
Pyrotronics MS-51 Category : Cerberus PyrotronicsThis is the single-action version of the Pyrotronics MS-501.
Therm-L-Stat DI-135 Category : OtherThis heat detector is very small compared to a lot of the other ones that I have.