Glass Break Detectors are audio sensors that detect the breaking of glass. They are immediately triggered by the sound and vibration/frequency of the glass breaking. Unlike motion detectors, which only trigger after an intruder has gained access into a room, these sensors trigger before the intruder has entered the room. In most cases this will deter the intruder from completing his entry.
Glass Break Detectors are often added to rooms where window contacts are also being used. This is a redundancy that protects against intrusions by breaking the window rather than opening the window. By using both in the same room, you protect against either type of intrusion. Glass Breaks are the perfect application for rooms with picture windows that do not open. Because they cannot hear around walls or corners a separate sensor is necessary for each room to be protected.
Glass Breaks are offered in both hardwired and wireless models and are available in both surface mounted and recessed versions that can be easily mounted directly on windows and doors, (surface mounts), and walls, (recessed or surface mounts).