AdaptaHorn® AC Vibrating Horn, Continuous Pattern, Weather-Proof, Series: 870, 120 VAC, 0.13 A, 15.6 VA, 50/60 Hz, 78 - 103 dB at 10 ft, Indoor Use, Specifications Met: UL Listed, FM Approved, Flush Mount, Heavy-Duty Die-Cast, Gray, 4-7/8 in H x 4-7/8 in W x 3.3125 in D, DC Coil: 150 ohm, Standards/Approvals: FM Approved|UL Listed, Applications: For ceiling and wall mounting in corridors and manufacturing sites, scoreboards