How To Change Battery On Adt Door Sensor. Your battery is now replaced. Insert the new battery in the proper place.

Best Value Online Guaranteed. An arrow on the front of the contact points to where the tab is located. ADTCOMHELP DOOR WINDOW SENSOR SELF-REPLACEMENT KIT INSTRUCTIONS This kit contains all of the necessary items to remount your existing sensor and new magnet.
Insert the new battery in the proper place.
ADTCOMHELP DOOR WINDOW SENSOR SELF-REPLACEMENT KIT INSTRUCTIONS This kit contains all of the necessary items to remount your existing sensor and new magnet. Or you can contact 800-ADT-ASAP to have it done by ADT via phone. Then replace the front cover by snapping it into place. Learn how to easily change the battery in your ADT Door or Window sensor.
