Simplex 2098-9209 Category : Simplex This is a photoelectric smoke detector. Brand SimplexModel 2098-9209Manufacturer HochikiType Smoke Detector
Simplex 4903-9417 Category : SimplexThis is a SmartSync TrueAlert which I am able to use with my Simplex 4010.
Simplex 2098-9806 Category : SimplexThere is no difference between this unit and my other Simplex 2098-9806.
