Certified Alarms is a scam. They have terrible customer support and terrible monitoring. They charge up the wazoo for their lousy plastic crap that they call equipment. You can get better made products our a McDonald's happy meal. I've had their "technicians" over 5 times to fix my back door. I swear they used double bubble bubble gum to stick it up. They charged me 500 bucks and I still don't have my windows covered. Their shady salesman told me that my whole house would be protected. Little did I know that he wasn't covering all my windows. What he really should have said was "Hey, I'm slapping up some buzzers on your front and back door and a clap on / clap off device to listen for footsteps while you're sleeping." Now I get to pay 30 bucks a month and I have useless garbage equipment and a 3 year contract. Do yourself a favor and go with somebody else that is cheaper and better!!!