Simplex 4903-9219 Category : Simplex This rectangular Simplex notification appliances has an electromechanical horn mechanism, rather than a speaker or an electromechanical horn mechanism. Brand SimplexModel 4903-9219Manufacturer SimplexType Alarm (Horn/Strobe, 4-wire)
Wheelock NS-24MCW-FW Category : WheelockThis is a two-wire, white Wheelock NS with a multi-candelas strobe.
