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, Features Convenient Plug-In Assembly, Corrosion Resistant Finish, Standards UL Listed, Amps 0.16, Color Gray, Vibrating Horn