These Federal Signal explosion-proof vibrating horns are constructed for safe use in hazardous environments. They are enclosed in heavy-duty copper-free cast aluminum housings tapped for 3/4 - inch conduit. Federal Signal Model 31X is corrosion-resistant vibrating horn with stainless steel diaphragm. The Model 31X is 120VAC and features an internal volume control. The 31X model is UL and cUL Listed for Class I, Division 1, Groups C & D; Class II, Division 1, Groups E, F, and G; and Class III. Both are CSA (Canadian Standards Association) Certified. A five minute duty cycle applies to both models. 5 Year Limited Warranty.
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