• Diode polarized
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• Red corrosion resistant heat flowed epoxy finish
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• Low current drain
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The Edwards 888D and 889D Series are diode polarized, heavy-duty, high decibel, vibrating horn signals. They are intended for use in hazardous locations requiring electrical supervision of signaling circuit field wiring, including fire alarm systems. May also be used for unsupervised signaling applications.

Two mounting brackets are provided on either side of the unit for wall mounting. The housing is tapped on one side for 3/4" (19 mm) conduit to allow fir field wiring installation.

For use in dusty, hazardous atmosphers where a distinctive, urgent signal is required. Typical applications included use in mines, petroleum plants, gas plants, grain elevators, flour mills, paper mills, textile plants and tankers.