Wireless Motion Sensor

Imagine you are home alone at night. You live in the country or a neighborhood without streetlights, so the darkness outside is almost absolute. Suddenly, though it is a calm night, you hear a noise outside. It could be the wind, but the weather forecast did not predict bad weather. You listen further and the noise persists. You are afraid to crack open the blinds and peer out the window because what if it’s a prowler and he sees that you are at home? You sit in your home, scared and unsure of what to do. You think of calling the police, but what if you bring them out for a false alarm? How embarrassing that would be. On the other hand, what if it isn’t a false alarm and you are about to become the victim of a home invasion? Put yourself in that scenario, and then imagine solutions. One of the easiest and most effective solutions to deterring prowlers and home invaders is simple – a wireless motion sensor.

If you have ever visited a home at night and suddenly, as you enter the proximity of the door, been greeted with a bright light turning on, then you have probably experienced the wonder of a wireless motion sensor. The wireless motion sensor is mounted somewhere near one or more entrances to the home and it detects motion. When the wireless motion sensor detects the motion, it turns a light on. This light serves a dual purpose – it allows the homeowner visibility outside the home and lets him or her know that something is moving around near one of the home’s entrances. If the person moving around near one of the home’s entrances is merely a visitor, it allows them visibility to continue their progress to the door. This is very convenient and even friendly. On the other hand, if the person moving about near one of the home’s entrances is a prowler or someone else with evil intent, it lets them know that they have been spotted. Sometimes a wireless motion sensor and light alone are enough to scare prowlers off to easier prey.

Wireless motion sensors installed at homes or businesses often work by sensing infrared energy. This is why they are often known as passive infrared (PIR) detectors. This means that they detect changes in temperature. To detect a prowler, the wireless motion sensor would have to be sensitive to the temperature of a human body. So, since humans have a skin temperature of about 93 degrees Fahrenheit, the wireless motion sensor would have to be set to detect when items (i.e. people) of approximately that temperature approach one of your home’s entrances. If a person stands still though, even if they fall into the temperature range prescribed, the wireless motion sensor will stop detecting them. This is because the wireless motion sensor is looking for a rapid change in temperature such as the change that would manifest when a person walks by.

Be warned. If your home does not have standard security measures such as a wireless motion detector, dead bolts, a barking dog and a visible sign or window sticker letting would-be home invaders know that your home will not be an easy target for robbery, then you could be in serious trouble. Thieves search out the easiest prey possible. If all of your neighbors take standard safety precautions such as installing wireless motion sensors but you do not, then guess which house on the block will look most attractive to thieves? For your safety and the safety of your family and your valuables, take the time to secure your home. Robbers will move on to the next house and you will live in peace and safety.

This Wireless Motion Sensor Review is Written/Updated on Oct 24th, 2009 and filed under Home Automation. Both comments and pings are currently closed.

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