2GIG Wireless Glass Break Detector (2GIG-GB100-345)The 2GIG GB100 345 is a fully supervised, tamper protected, ceiling or wall mounted, wireless glass break detector. It utilizes a dual stage glass break detection method that listens for both the impact of an object hitting the glass (thud) and the sound of the glass shattering (crash). This helps to minimize false alarms triggered by sounds similar to breaking glass. The sensor transmits in encrypted mode by default and can be set to unencrypted mode