This is not a Security Alarm that calls the alarm company after a break-in. This Stainless Steel Receptacle mounts behind your Deadbolt Striker-plate. As your Deadbolt plunger passes through the striker-plate, instead of entering a routed hole in the weak doorframe, it enters our reinforcement that extends into the studs of your home. Now an intruder cannot kick in your door by breaking the weak doorframe. This purchase does not include the reusable template and drill guide available in our Standard Deadbolt Reinforcement with Installation kit. Buy one Deadbolt Reinforcement For Standard doors with Installation kit for your first door and get   these single reinforcements for additional doors. The installation kit is reusable for multiple installations.