Wheelock HSR Category : Wheelock This is from the Exceeder series. The only difference between this and my Wheelock HSW is the color. Brand WheelockModel HSRManufacturer WheelockType Alarm (Horn/Strobe)
EST 882-2B Category : EST/EdwardsThis unit has an electronic horn rather than an electromechanical mechanism.
Space Age AV32+2DCD Category : Space Age ElectronicsThat is an electromechanical horn on the rear of the strobe plate.
