Simplex 4903-9101 Category : Simplex The only difference between this and my other Simplex 4903-9101 is that this strobe is meant to be on the bottom rather than on the top. Brand SimplexModel 4903-9101Manufacturer SimplexType Alarm (Strobe)
Wheelock NS-24MCW-FW Category : WheelockThis is a two-wire, white Wheelock NS with a multi-candelas strobe.
