Audible Alarm Type Horn Visual Indicator Type No Visual Indicator Voltage 24V DC Decibels 97 dB Sound Pattern Continuous Indoor/Outdoor Indoor Outdoor Mounting Wall Height 4.875 in Width 4.875 in Depth 3.3125 in Vibrating Yes Housing Material Heavy Duty Die Cast Rating NEMA 4X Operating Temp -13 Degrees to 104 Degrees F Standards CSA UL Listed for Outdoors UL Listed for Class I Division 1 and 2 Groups B C D Class II Division 1 and 2 Groups E F G Class III locations