Simplex 4251-20 Category : Simplex This was the original Simplex Tbar. The Simplex 2099-9754 is the updated version of it. Brand SimplexModel 4251-20Manufacturer SimplexType Pull Station
Simplex 4904-9101 Category : SimplexThis is the same strobe that is found on the Simplex 4903-9101 strobe plates.
