Audible Alarm Type Siren, Visual Indicator Type No Visual Indicator, Voltage 9 to 28V DC, Decibels 82 to 100dB, Sound Pattern Continuous, Indoor/Outdoor Indoor, Outdoor, Mounting Surface, Height 3 in, Width 3.625 in, Depth 1.875 in, Diameter 3.625 in, Vibrating No, Housing Material ABS Plastic, Rating NEMA 4X, Operating Temp. -13 Degrees to 158 Degrees F, Standards CE, Amps 4 to 33mA, Color White, Low Profile Mini Sounder