Audible Alarm Type Horn, Visual Indicator Type No Visual Indicator, Voltage 120V AC, Decibels 0 to 110dB @ 10 ft, Sound Pattern Continuous, Indoor/Outdoor Indoor, Outdoor, Height 12.25 in, Width 7.3125 in, Depth 8.5 in, Diameter 8 in, Vibrating No, Housing Material Die Cast Aluminum, Rating NEMA 4X, Operating Temp. -67 Degrees to 150 Degrees F, Standards NEC Class 1, Div. 2, Groups A, B, C, D, Class II Div. 2, Groups F, G, Class III, UL, cUL, Amps 0.67 AC, Color Gray, Signaling Device