Fire-Lite H355 This is an addressable heat detector, 135F fixed temp. Brand Fire-LiteModel H355Manufacturer System SensorType Heat Detector
Space Age AV32+2DCD Category : Space Age ElectronicsThat is an electromechanical horn on the rear of the strobe plate.
Pyrotronics ES0-24S Category : Cerberus Pyrotronics, PyrotronicsThis is a rebranded Wheelock horn/strobe, and a pretty rare one at that since it has an electronic horn mechanism...