LifeSOS GB-A30, Accoustic Glass Break Detector

1. Pattern Recognition Technology 2. RF Signal Transmitter. Microphone : Omni-directional electret Detection Range : 6 m ( 20 ft) for plate, tempered, laminated and wired glass. 3.65 m ( 12 ft) for armor-coated glass. Alarm Duration : 4 seconds RF immunity : 20 V/ m, 1 MHz to 1000 MHz Recommended Glass Size : Minimum: 0.3 x 0.6 m ( 1 x 2 ft) or larger glass thickness Dimensions : 80 x 108 x 43 mm ( 3.13 x 4.24 x 1.70 in.) . Weight : about 140 g, ( with transmitter and batteries) RF Signal : Trigger, Supervision, Tamper, Battery Low, Reset Power : two AAA Alkaline batteries Battery Life : about 2 years 1 Year Warranty