Simplex 2098-9442 This is a 200F fixed temperature heat detector. Brand SimplexModel 2098-9442Manufacturer UnknownType Heat Detector
Simplex 4903-9417 Category : SimplexThis is a SmartSync TrueAlert which I am able to use with my Simplex 4010.
Space Age A32-BL-SFXC-TJ24D-HA24D+HA24D Category : Space Age ElectronicsI’m pretty sure that the horn on this unit is made by Space Age Electronics. Otherwise, it’s probably a Wheelock...