Simplex 2901-9838 I’m not sure why I’ve held on to so many of these horns. Brand SimplexModel 2901-9838Manufacturer FaradayType Alarm (Horn)
GE 521BXT Category : GEI think that this smoke detector might be intended for use in security systems.
System Sensor SP1W2475ADA Category : System SensorThe strobe portion can detach from the speaker body.
Amseco BZ-54VT+RSD-24L Category : AmsecoThat rubber band is holding the strobe to the unit since there are no screws keeping it secure.
