Audible Alarm Type Horn, Visual Indicator Type No Visual Indicator, Voltage 24V DC, Decibels 78 to 101dB, Sound Pattern Continuous, Indoor/Outdoor Indoor, Outdoor, Mounting Surface, Height 4.875 in, Width 4.875 in, Depth 2.125 in, Vibrating Yes, Housing Material Heavy Duty Die Cast, Rating NEMA 4X, Standards UL, Amps 0.16, Color Gray, Weatherproof Vibrating Horn