Simplex 2098-9201 This is a “TrueAlarm” series detector. It is tested with a magnet. Brand SimplexModel 2098-9201Manufacturer SimplexType Smoke Detector (Photoelectric, 4-wire)
Faraday 6234-E Category : FaradayI believe the “E” appendage on the end of the model number means it is a sync-strobe.
Simplex 4903-9101 Category : SimplexI believe that this strobe plate was designed for use with a 2901-9838, but it could be used with a...