Once the Alarm goes off – It’s too late. Criminals are already in your home. Alarm Systems are a highly recommended form of home security, but many times criminals still attack. Often doorways provide up to 2 minutes for the owner to enter a security code. Bad Guys know this. That’s one reason they typically attack doors and not windows. Many terrible things can happen in 2 minutes. Door Devil is one of the top door security solutions for preventing home invasion.