Examining the entry sensor and magnetic tab, you will see the small arrow symbols on both items. For optimal performance, arrows must be pointed at each other and on the same plane when installed on a door or window. Use double-sided sticky tape to elevate the magnetic tab to the same level as the entry sensor. If you need to rotate the magnetic tab to align the arrows, use the extra sticky tape to attach the magnetic tab. When ready, remove the adhesive back and firmly position the sensors in the desired location. In the app, tap Done to continue. You will return to the Devices screen. Repeat these steps for installation of additional sensors.