Audible Indicator: Type - Single Tone Signal; Mode of Operation - Continuous Tone; Sound Level Category - Medium Sound Level; Voltage - 30-120 VAC/DC; Mounting Type - Screw Neck Panel Mount; Loudness - 71-85 dB @ 2 Ft; Current - 4-18 mA; Frequency - 2900 Hz; Material - 6/6 Nylon; Color - Black; Temperature Rating - -40 to 85 deg C; Terminal Type - Screw Terminals; Terminal Size - #6-32 Screw 0.25x0.32 in Tab 1/4 in QC; Size - 1.69 in Dia. x 1.31 in Length 42.9x33.3mm; Mounting Size - 1.25 in Dia. Panel Cutout; Manufacturer Series - Sonalert