Equipment FAQs

Your sensor or magnet mounting instructions can be downloaded on this PDF reference sheet or you can watch the instructional video below.

Place your security system on test using or by calling 800.ADT.ASAP. Arm your system in Stay Mode, and then open the door or window with the reattached sensor and/or magnet. Within 90-seconds the alarm should sound and display the sensor zone on the keypad. Enter your user code to reset and turn the system off, and then remove your system from test. Your door or window sensors should be fully functional now.

If you are missing one of the below items, please call the residential or business service number on our Contact ADT page. Please note this kit does not include a replacement sensor. 

1. 2 Alcohol Swabs
2. 2 Two-Sided Tape Strips (2”x1”)
3. White Magnet
4. Brown Magnet
5. 2.8 oz. Tube of Silicon Glue
6. 2 Flat Head Metal Screws ½” long
7. 2 Pan Head Metal Screws ½” long 

Customers can purchase replacement sensors from ADT, however an ADT technician is required to program and install. To order a new sensor, call the residential or business troubleshooting number on our Contact ADT page.