The Glass Guard Vibration Door Window Alarm is an effective low cost vibration alarm that can be used for securing windows or patio doors. The alarm can also be used as a personal property alarm to protect computers, TVs, stereo's and cabinets etc.

When an intruder is attempting to break-in and the window vibrates more than normal or is broken, the vibration sensor triggers the alarm.

These devices are mounted on barriers and are used primarily to detect an attack on the structure itself. The technology relies on an unstable mechanical configuration that forms part of the electrical circuit. When movement or vibration occurs, the unstable portion of the circuit moves and breaks the current flow, which produces an alarm. The technology of the devices varies and can be sensitive to different levels of vibration.

• Easy to install;
• No wiring necessary;
• The unit can be used as a personal property alarm to protect computers, TVs and videos;
• Portable door security for your peace of mind while traveling;
• Effective, low cost vibration and shock sensitive alarm that can be used for securing windows and patio doors;
• Use the sticker at the back of the unit to stick the unit on glass pane, door or window.