Audible Alarm Type Horn, Visual Indicator Type Strobe, Voltage 120V AC, Decibels 90 dB, Sound Pattern Continuous, Indoor/Outdoor Outdoor, Mounting Surface, Height 5.5 in, Width 5.5 in, Depth 0.625 in, Vibrating No, Lens Color Red, Current Drawn 148 mA, Housing Color Gray, Housing Material Engineered , Light Output 21 CP, Flashes per Minute 60, Operating Temp. -31 Degrees to 150 Degrees F Outdoor, 32 Degrees to 120 Degrees F Indoor, Features 3/4 in Conduit Top, Standards UL