You could spend thousands on an elaborate home security system, and the people who sell home security systems are adamant that it’s the best way to protect your home from burglary. But is it really necessary for most of us?
You can buy motion-sensing alarms for about $30, and their piercing siren will send many intruders running. It won’t call the cops or provide any other kind of protection, though.
There’s nothing stopping you from putting up a sign that says you have a security system even if you don’t, but remember to put one on by the back door, too. If it makes you feel better and you have the cash, get a good security system. But don’t sweat it that much.