Audible Indicators: Type - Single Tone Signal; Mode of Operation - Continuous Tone; Sound Level Category - Medium Sound Level; Voltage - 4-28 VDC; Mounting Type - Screw Neck Panel Mount; Loudness - 64-76 dB @ 2 Ft; Current - 3-16 mA; Frequency - 2900 Hz; Material - 6/6 Nylon; Color - Black; Temperature Rating - -30 to 65 deg C; Terminal Type - Wire Lead; Terminal Size - 0.125"Tab (1/8"QC); Size - 1.64"Dia. x 0.81"Length (41.6x20.5mm); Mounting Size - 1.06" Dia. Panel Cutout; Manufacturer Series - Sonalert