I never see my dog as a home security system. He is so lovely and I treat him like my son. And I don't like people who treat their dog as a security system. If you are looking for a security system, you should install a system for that instead of making the poor dogs as the system. What I have installed is a Videorelay unit. I got it installed from AlarmForce Videorelay at Mississauga, Ontario. It is working pretty well. It alerts me with an email with three pictures whenever someone approaches my home while I am away. And I have a big suggestion to all of you. Please treat your dog just like your kid, they are so adorable and loving. They give back the love you give them