Simplex 4903-9417 Category : Simplex This is a SmartSync TrueAlert which I am able to use with my Simplex 4010. Brand SimplexModel 4903-9417Manufacturer SimplexType Alarm (Horn/Strobe)
GE 521BXT Category : GEI think that this smoke detector might be intended for use in security systems.
Notifier BNG-1R Category : NotifierThis is the oldest Notifier pull that I own which opens with the modern Notifier key.
