Features:Diode polarized Corrosion resistant heat flowed epoxy finish Low current drain The Edwards 879DEX 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. For non-fire alarm applications horns have a NEMA type 4X rating and may be used outdoors (recommended above temperatures of +25F). 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.Product Specifications DESCRIPTIONVibrating Horn MANUFACTURERS PART NUMBER879DEX-G1 TYPEExplosion Proof VOLTAGE24 BRANDEdwards Signaling¢ AMPS0.16 dB AT 10 FT.97 DC COIL RES. (OHMS)20 VA3.8 LED COLORSGray