Simplex 4903-9238 Category : Simplex This unit has an electronic horn, as opposed to the speaker or electromechanical horn found in other rectangular Simplex notification appliances. Brand SimplexModel 4903-9238Manufacturer SimplexType Alarm (Horn/Strobe, 4-wire)
Notifier NWS-24 Category : NotifierThis is an extremely rare strobe that Notifier produced when they were owned by Emhart.
Simplex 477-669 Category : SimplexOddly enough, the model number on this particular smoke doesn’t fit the typical pattern for Simplex devices.
