Why buy a motion sensor alarm system?

An alarm system can be an excellent way of protecting your home from intruders. If you've ever been unlucky enough to be a victim of a burglary then you'll know how distressing an experience it can be. It's one thing dealing with the material issues, while it's obviously unpleasant having your possessions stolen if you have adequate insurance cover it can be more of an inconvenience and aggravation than anything else. These losses are of little consequence to any sentimental items that may be taken which can be priceless and irreplaceable. Even if nothing is taken real distress can come from the thought of a strange person, and a criminal at that, poking around inside your property, amongst your possessions and poking their guilty fingers into the very heart of your home. This is where adequate home security comes into play.

Alarms work in two ways to protect your property and possessions. In the first instance, and probably most importantly, they provide a deterrent to the would-be burglar. Alarm systems have a very obvious and visible box, mounted on the side of the house as part of the installation process.
Cynics might say the professional criminal knows how to deactivate or circumvent alarms and they are right, the only real way to stop someone from getting into your home is with iron bars but ask yourself this question; if you were a burglar looking for a house to rob, do you pick the home with the most or least effort required? Do you pick the home with an alarm or the home without?

Of course one of the problems with this type of alarm system is that they can be expensive. There are many different configurations of alarms, some have closed-circuits to protect windows and doors, but normally the more door and windows that need protecting the more expensive the alarm becomes. So it can be better to focus on possible entry points, front and back doors, ground floor windows or basement windows if you have any, when thinking about an alarm system. Then there's also the question of protecting the insides should somebody enter through a window which is not connected to the alarm. This is where motion sensor alarms come into play and these can detect movement over quite large zones. Once the alarm is armed any movement or change in temperature triggers the alarm.

We're all familiar with motion sensors from motion sensor lights. You might even have some installed already around your property. These are the lights that come on automatically whenever something moves. These days nobody actually believes that someone has turned the light on at their approach but just by illuminating the area it can be enough to deter a potential burglar. This is especially so if the area illuminated is a likely point of entry such as the front door or a side door. Anything that makes it more likely that the burglar will be seen is a good thing. And with all home security we're trying to stack the odds in our favour and make it so that any burglar will pick someone else's house instead of hours.
Motion sensor lights work by having sensor hooked up to an alarm. Typically they detect the heat energy given off by a human and use an infrared camera to "watch" for light in this wavelength. They also depend on the heat energy moving, in other words they watch for a rapid change of heat to prevent them from being triggered by say, the heating up of the pavement.

Motion sensor lights are a good deterrent because they provide a standalone solution. You can buy them as you can afford them. This is not always the case with alarm systems which can be quite expensive to start with. However you can get a similar effect to an alarm and a motion sensor for far less money by using motion sensor alarms. These are not as well-known as their big brothers but work to provide a level of deterrence and security above and beyond having no alarm. Motion sensor alarms are self-contained units that contain a motion sensor and alarm. In other words once activated the device waits for an intruder, detected by heat, and will then trigger an ear piercing alarm (some of them go up to 120 dB) to alert you and, hopefully make the burglar think twice. These self-contained units can start from as little as $20. They usually have the option to be powered by batteries or from  a mains adapter and can have a detection range of up to 30 feet away. They can also be set to a less aggressive and sound a chime when someone approaches.
Although they are not ideal they do provide some level of security. Even if you only use chime mode stop people sneaking up for only $20 it could be well worth it!