It is very essential that you take necessary precautions to protect your home from criminals because some of your things can be replaced but most of your valuable items may be very costly and irreplaceable. If the criminal enters your house, he/she will surely try to get hold of those valuable things. Criminals mainly enter through the door of your house especially the back door. Thus you must install a door alarm in your home so that once it is opened by unauthorized people you can be warned.
The door alarms have sensors that detect any kind of forceful pressure on the door. Once it starts creating warning sounds, the criminal will panic and will do something wrong because of which he/she will get caught or he/she might just run away due to the alarm system. The sound created by the door alarm last for about twenty to thirty seconds but the sound is loud enough to warn you about a possible threat from a criminal. Thus door alarms help prevent crime or theft.
Another important thing that the door alarm does is that it notifies you of a possible fire breakout in or near your house. Along with the sensors that detect motion, smoke detectors are in-built in the alarm