Audible Alarm Type Siren Visual Indicator Type No Visual Indicator Voltage 120/230V AC 24V DC Decibels 96 dB Sound Pattern Continuous Indoor/Outdoor Indoor Outdoor Mounting U-Bracket Height 8.2344 in Width 7.4531 in Depth 7.4531 in Vibrating No Housing Material Glass Reinforced Polyester Rating IP 66 Operating Temp -58 Degrees to 158 Degrees F Standards ATEX and IECEx Certified CE Listed Pending UL cUL GOST EAC INMETRO Certifications Zone 1 21 Rated EX D IIC Amps 0.11