 Introducing the GB1E-345 E-Series Encrypted Wireless Glass Break Detector from 2GIG. A pitch detection device that will listen for the sound of breaking glass. Utilizing E-Series encryption for better sensor security. 300 feet open air line of sight range back to the panel. This device will operate in temperatures between 32 degrees to 120 degrees Fahrenheit. Utilizing two CR123A or its lithium equivalent batteries. With dimensions of only 4.55 inches by 1.9 inches and a weight of only 5.1 ounces. Ladies and gentlemen, the GB1E-345 E-Series Encrypted Wireless Glass Break Detector from 2GIG.