Innovations in Communications™ Since 1955

155 Adams Avenue, Hauppauge, New York, 11788-3699 USA
Phone: 800-231-1414 or 631-231-1414 Fax: 631-231-1498 E-Mail:
Grill Type Hazardous Location Horn
Diode Polarized, Outdoor Rated, NEMA Type 4X
Edwards is a registered trademark of UTC Fire & Security


The Edwards 878EX AC & 879EX DC Series are heavy-duty, high decibel, vibrating horn signals designed for use in hazardous locations.

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

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


Corrosion resistant heat flowed epoxy finish
Low current drain
Agency Approvals
UL Listed for Class I, Division 1 and 2, Groups B, C, and D; Class II, Division 1 and 2, Groups E, F, and G; and Class III locations
UL Listed for outdoor locations
NEMA Type 4X Rated
Wide operating voltage range: -20% to +10% of nominal voltage
Power connection wires embedded in sealing compound
Click for Spec Sheet.
Cat No. Volts Amps VA DC Coll Res (Ohms) dB at 10 FL
878EX-E5 12V 50/60 Hz 1.25 15 1.45 97
878EX-G5 24V 50/60 Hz 0.625 15 5.2
878EX-N5 120V 50/60 Hz 0.13 15 150.0
878EX-R5 240V 50/60 Hz 0.065 15.6 580.0
879EX-C1 6V DC 0.70 4.2 1.4
879EX-E1 12V DC 0.27 3.2 6.0 97
879EX-G1 24V DC 0.16 3.8 24.0
879EX-J1 32V DC 0.13 3.2 40.0
879EX-K1 48V DC 0.07 3.4 96.0
879EX-P1 125V DC 0.025 3.1 600.0
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This page was last updated October 20, 2014

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