It’s easy to adhere your sensors (Entry Sensors and corresponding magnets, Motion Sensors, Keypads and Panic Buttons). Simply remove the white strip(s) from the back of each component to expose the adhesive tape. Then press onto wall or door. Tip: It’s a good idea to first choose where you will put each sensor before removing the adhesive tape. The SimpliSafe do-it-yourself security system was designed to be as simple to install as possible.