The burglar alarm is a device designed to inform if a door or window is open house, without the consent of any of its inhabitants. To exist in the market varieties of brands and different technologies, costs decrease due to competition from manufacturers also have the advantage that their connection is pretty fast and simple, any ordinary person can connect without problems.
Although there are devices that are programmed only to protect certain sector of the house; there are those who have several functions in one device, such as detecting fire in the fire and protect the auto sync.
They use a more complex and high-tech system to include both fields. Others have a more advanced program that allows you to warn owners of the house, if the theft is real or just a false alarm caused on purpose. Finally, the most advanced burglar alarms usually have security cameras that record and film all movements or events that occurred at a certain location. For all this, that burglar alarms provide more benefits than disadvantages and it is advisable to use them for safety.