Audible Alarm Type Horn, Visual Indicator Type No Visual Indicator, Voltage 24V AC/DC, Decibels 110 dB, Sound Pattern Continuous, Indoor/Outdoor Indoor, Outdoor, Mounting Conduit, Surface, Height 13 in, Width 8.25 in, Depth 8.875 in, Vibrating No, Housing Material Zinc Alloy, Operating Temp. -31 Degrees to 104 Degrees F Hazardous Locations, -40 Degrees to 151 Degrees F Non-Hazardous Locations