DSC PG9922 Wireless PowerG GlassBreak Detector Sensor Glass break detection of plate, tempered, laminated and wired glassDetection rage up to 20ft (6m)Visible link quality indication shown on the deviceAcoustic Pattern Recognition Technology provides 360? coverageVisible and transmitted low battery indicationCertified with ULC Wireless Commercial Burglary Listing under ULC-S304-16 Standard - an industry first in Canada!* *Only applicable in Canada