GLASS BREAKAGE ALARMS

The glass break detector may be used for internal perimeter building protection. When glass breaks it generates sound in a wide band of frequencies that cannot be heard by the human ear. Glass break acoustic detectors are mounted in close proximity to the glass panes and listen for sound frequencies associated with glass breaking.

Seismic glass break detectors are different in that they are installed on the glass pane. When glass breaks it produces specific shock frequencies, which travel through the glass and often through the window frame and the surrounding walls and ceiling.

Seismic glass break detectors “feel” these shock frequencies and in turn generate an alarm condition.