Motion Sensors Explained
A motion sensor or motion detector is one of the most important pieces of equipment you can add to your home security system. When it comes to having a motion sensor there are two types you will be looking at when making decisions about your home security system. Those types are interior motion sensors and exterior motion sensors. Ideally you will decide to use both types to protect your home, since each offers it's own unique advantages. Just remember that home security is about creating multiple layers of protection in and around your home to keep criminals from being able to get in undetected. Ultimately what your goal should be is to make your home as unappealing of a target as possible so that criminals will decide that trying to break in is simply not worth the risk.
Exterior Motion Sensors
When used as a part of an exterior barrier a motion detector is normally connected to outdoor lighting such as a porch light. The way this works is simple, if someone approaches your house at night the motion sensor detects their movement and turns on the porch light. If this is a criminal this is one of the most frightening things that can happen when they are planning a break in. Not only are they suddenly standing in plain sight because a light has been turned on, there's also the possibility running through their head that someone in the house saw them and turned on the light. Because of the sudden increase in risk involved with trying to break into the house now that a motion sensor has turned on exterior lighting there's a very good chance that the criminal will decide to take off rather than risk being caught.
Interior Motion Detectors
An interior motion detector is a part of your home security system that you put inside your home to act as an extra layer of protection in the event that a criminal manages to make it through any of the exterior barriers or alarm sensors you have in place. What you have to remember is that no alarm sensors are completely impossible to get around. Maybe you have window sensors installed but don't have glass break sensors. In that case a criminal could simply break a window and climb in. Or maybe you have a small window without a sensor that you thought wasn't a threat, and one of the bad guys manages to climb through it. The point is that if there is a way through an exterior barrier or sensor, and a criminal is determined enough, he will probably find it. While that may be distressing to think about that's exactly why you have an interior motion sensor as an extra layer of security for your home.
When something sets of a motion detector that is connected to an alarm system then there are a number or responses that will happen automatically depending upon how you have your home security system set up. In most cases a motion detector that is set off will trigger the central alarm, and if it is a monitored alarm service then they will usually call the police. It isn't an instant response, most alarm companies want to give you a minute or so to disarm the system in case it was accidentally set off. After it becomes apparent that it is not a false alarm the security company will then contact the police and get them on the way to deal with the problem.
When You Should Use The Motion Detector In Your Alarm System
Most alarm systems give you the ability to arm the system for when you are leaving, or arm it for when you are going to be at home. When you set your alarm to away mode all of it's sensors will be active including the motion sensor. When you set your alarm to stay your motion sensor will not be activated. This is important because if you have your motion sensor armed when you are home then you are going to set it off and trigger an alarm event. Sure you can get to the control panel and turn it off before the police are dispatched, but this is an aggravation that you don't need. You also shouldn't leave the motion sensors on when you go to bed for the same reason. While you may not set off the motion sensor while you are sleeping, when you get up to get a drink or use the bathroom you are going to set it off, then you'll be left trying to disarm the alarm system quickly again.
Another common concern that people have when they are considering using a motion sensor is whether or not they can use one when they have pets. While a pet can set off a motion sensor it's important to keep in mind that these sensors can be adjusted to help prevent this from happening. After all the last thing you want to have happen is to have your pet setting off your alarm system all the time. This won't only be an inconvenience, if it happens frequently enough and the police are dispatched then you will likely be fined for it as well.
Motion Sensors Are The Final Layer Of Protection Of Any Good Home Security System
In an ideal world the exterior barriers and alarm sensors you have installed around your home would keep out any criminal. Well in a truly ideal world you wouldn't need a home security system. But this isn't an ideal world and it's up to you to do what you have to do to keep your home and your family protected. The last thing you ever want to have happen is to come home and find that your home has been burglarized leaving you feeling violated and also dealing with the financial losses that breaks ins cause. The good news is that you don't have to ever deal with this yourself as long as you get a good home security system that includes the use of a motion detector.