The DS1100i Detector Series uses microprocessor-based sound analysis technology (SAT) to listen for the specific frequencies associated with breaking glass.  The DS1101i, DS1108i, DS1102i, and DS1103i can be used to detect breakage of plate, tempered, laminated and wired glass types.  A built-in environmental test feature alerts the installer to false alarm hazards in harsh environments.  Several cover designs are available.