System Sensor 4WT-B This 4-wire smoke detector also has a thermal heat sensor. Brand System SensorModel 4WT-BManufacturer System SensorType Smoke/Heat Detector
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...
Couch F1-A Category : CouchUnlike my other F1-A, this one has a red handle and the hex lock on the front.
Simplex 4904-9139 Category : SimplexI believe that this strobe plate was designed to be used with bells, such as the Simplex 2901-9333.