A motion sensor, often called a motion detector, is a very important and useful part of most home and business security systems. They provide the system with a way to detect if there is any movement within the monitoring area, and will signal your monitoring company if there is unusual movement or a possible threat.
The main idea is that an intruder will need to move around while inside your home. If they are moving, a motion sensor will detect this and alert you. There are also some other advantages to using a motion sensor. They can help you keep track of when your family members are home, trigger a doorbell when someone comes to the front door, let you know when children are in a part of the house they should not be in, saving energy by only turning on lights when there is motion detected, etc.
Motion detectors are pretty simple but there are some different types to consider. Passive vs Active. Both act similarly in that they detect motion but the passive detectors do not emit energy, they simply detect changes in the energy in the room. Active sensor will shoot out different forms of energy and are considered more sensitive and reliable, especially in low-light environments like a dark home.
Some motion sensors include audio and wavelength sensors to be even more effective. Nowadays, most motion sensors in the home are wireless, and many are used in cameras where advanced signal recognition can take place to keep false alarms to a minimum.
Most professional installers will know the best places for installing the motion sensors. If you are doing the installation yourself, it is important to place sensors in points where you will get the best coverage and reliability. This is usually near the corners of room (in the ceiling) and the middle of hallways. Most sensors need to be 11-16 feet apart so they are not interfering with one another. Some motion sensors are able to pickup motion 40-70 feet away, which is a considerable distance when you have a smaller home.
If you have questions regarding the installation or placement of motion sensing equipment, please feel free to contact us for help.