1CLICK the thumbwheel once to see additional details aboutthe Home Key.2. Set Up the Open/Closed SensorInstall Sensor BatteryTo start the setup of your Open/Closed sensor, you must installone lithium CR123A 3V battery into your sensor (included).OPEN the sensor by pressing on the battery cover tab on thebottom and pivoting the cover off. Insert the battery, being sureto orient it correctly in the battery clip.The green light inside the sensor below the battery clip shouldflash four times if the battery is okay and installed properly.Close the sensor cover.Getting StartedOpenthesensorcover.Insertthebatteryintothesensor.@ge]C]qBmklMh\Yl]\