Two-Tone Indoor Siren (490-0490A) Specifications Faxback Doc. # 15178 Sounding Elements:.................................Three 35mm piezo buzzers Housing:...............ABS plastic-3.5 in. (9cm) diameter x 1.5 in. (3.8cm) deep (with mounting adapter) Operating Voltage:.........................................7 to 14 volts DC Current Drain:.................................360 mA (maximum) at 12 volts Tone:...................................................Rise/fall or steady Alarm Output Level:..................109-115 dBA at 3 feet (1m) at 12 volts (LB/all-05/08/95)