Motion detectors are everywhere. You have probably run across one at least once. There are many different purposes for these motion alarms, but the main purpose is for the person with the detector to be able to tell when someone is on their property.
It is very likely that you have run across many motion sensors in your life, whether you know it or not. Many different places employ the use of motion sensors for many different reasons. One type uses motion detector radar to alert door sensors when individuals come near them, which "tells" an attached mechanism to open the door.
Now that you are familiar with motion detectors, let's explore the different types that exist. There are actually several different types of detectors. The internet lists all different types of alarms, including infrared. These identify heat producing objects. This particular kind would keep the light and alarm from turning on if an inanimate object flew by.
If you are interested in something for inside your home or office for security reasons, then the ceiling mount type is an option. These cordless radar motion detectors can cover the entire room when mounted on the ceiling.
What are some of the more common uses for motion detectors? The most common use for them is home protection. They are effective on a number of levels. Often placed outside the front of your home, near the door, the detector will sound an alarm and most will have a light that turns on at the first hint of movement. They can also be used in conjunction with built in alarm systems to increase safety.
Ceiling alarms are a useful tool for indoor security reasons, because they can "see" the whole room at once. Another type of motion sensor that is used by businesses is one that will open doors for their patrons to enter their establishment. This type uses detector radar methods to trigger a mechanism to open the door when customers approach.
There are other, more creative, uses for motion detectors. They can be used with small children or the elderly to sense when they have left their bedroom at night. They can be used on outside doors, so that you will know when your teenager is sneaking in or out at night. Another great use for motion alarms is as a sensor by the pool, to allow you to know when some is near that area. It is a good idea to consider having alarms like these placed in your home. You will feel much safer knowing what is happening on your property.