Sound activated systems (acoustic sensors) utilize sound detection to guard enclosed
areas such as an empty home. They use supersensitive microphone sensors installed
on walls, ceilings, and floors to detect any sound caused during a break-in.
Since each home may have different levels of normal ambient noise from appliances
such as air conditioners, refrigerators and furnaces or noisy cars in the
neighbors driveway, the sensitivity of the sensor can be tuned for each individual
home installation.
If ambient noise levels are too high, this
system may not function well enough to use successfully. If your empty home is
in the noisy environment category, consider the wide array of infrared sensors,
microwave sensors, photoelectric sensors and electromagnetic sensors available
on the market.
When an electric circuit system can be bypassed by
smashing through a window, acoustic glass break sensors are a convenient low cost
solution. Glassbreak Sensors are usually wall mounted devices. They work when
the microphone sensor hears the sound of breaking glass and triggers an alarm.
It's great for safeguarding rooms in your home with many windows. A combination
of glassbreak and motion sensors is also quite effective. |
