Wheelock EH-EL1 Category : Wheelock This horn was attached to my Space Age Electronics A32-BL-SFXC-TJ24B-0000 when I received it. Brand WheelockModel EH-EL1Manufacturer WheelockType Alarm (Horn)
EST 882-2B Category : EST/EdwardsThis unit has an electronic horn rather than an electromechanical mechanism.
Gaylord NC-1357A Category : GaylordThis is a rebranded EST/Edwards 270-SPO for use in some sort of ventilator system.
