Audible Alarm Type Buzzer Visual Indicator Type No Visual Indicator Voltage 9 to 28V DC Decibels 115 dB Sound Pattern Continuous/Pulse Indoor/Outdoor Indoor Outdoor Mounting Surface Wall Height 4.3125 in Width 3.9375 in Depth 3.9375 in Diameter 3.9375 in Vibrating No Housing Color White Housing Material Polycarbonate/ABS Blend Flashes per Minute 0 Rating IP 65 Operating Temp -40 Degrees to 158 Degrees F Features Clear Audible Warning 32 Tones Standards CE Color White