Audible Indicators: Type - Single Tone Signal; Mode of Operation - Continuous Tone; Sound Level Category - Medium Sound Level; Voltage - 3-20 VDC; Mounting Type - Screw Neck Panel Mount; Loudness - 71-86 dB @ 2 Ft; Current - 3-16 mA; Frequency - 3500 Hz; Material - Valox; Color - Blue; Temperature Rating - -40 to 85 deg C; Terminal Type - PCB Solder Terminal; Terminal Size - 0.31" Dia; Size - 0.906"Dia. x 0.39"Length (23x10mm); Mounting Size - 0.59" Dia. Panel Cutout; Additional Information - Terminal Material: Nickel Coated Brass; Manufacturer Series - Sonalert