What are home alarm systems for?

Answer:
Home alarms systems have many purposes. Usually home owners have such systems to alert them if there are unknown and unwanted trespassers entering their home. These systems are effective in catching burglars and other intruders. Also, some systems have been developed to alert homeowners if there are dangerous toxins or gases like Carbon Monoxide in the air of their home.
First answer by Answers Publishing Network. Last edit by Answers Publishing Network. Contributor trust: 102 [recommend contributor recommended]. Question popularity: 1 [recommend question].