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" conduit. Federal Signal 31X models are corrosion-resistant vibrating horns with stainless steel diaphragms with a five minute duty cycle.
99 dBA @ 10' (110 dBA @ 1m)
Internal volume control
Rated for Class I Division 1 Groups C & D; Class II Division 1 Groups E F & G; Class III
UL and cUL Listed; CSA Certified