2#4 wood screws (not included). Remove the cover of the sensorto locate the holes that are positioned below the battery clip.If you would like to add, test, and place additional sensorsor accessories (such as a Water Sensor, Reminder Sensor,or additional Open/Closed Sensor), you can do so now.Instructions for the setup of each sensor are included withtheir packaging.. Set Up Remote AlertsDuring this step, you will be completing the setup so that thesystem can send you cell phone text message or email alerts.When you plug the phone cord into the phone jack, the BaseStation will make an initial call to the server to check in. Thiscall will last less than a minute. After you register and choosea Global "CallMe" option on the Home Key to send remotealerts (see page 28), the Base Station will make a call each timean alert is initiated.Getting Started