These Federal Signal explosion–proof vibrating horns are constructed for safe use in hazardous environments. They are enclosed in a heavy–duty copper–free cast aluminum housing tapped for 3/4" conduit.

Federal Signal Models 31X and 41X are corrosion–resistant vibrating horns with stainless steel diaphragms. Model 41X is available in 24VDC. The Model 31X is available in 120VAC and 240VAC and features an internal volume control.

The 31X and 41X models are UL and cUL Listed (Underwriters Laboratories) for Class I, Division 1, Groups C and 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.