If Your Door Alarm Sensor Goes Off, ADT Alerts You Right Away

How do I add a door or window sensor to my ADT-monitored system?

All ADT-monitored plans include 3 motion sensors (indoor, window, or door sensors) in the price, and these sensors will all be installed by expert technicians (with an average of 13 years of experience). Your technician is there to help you protect your home the way you want it to be protected, so feel free to be involved in the process..

If you want additional sensors, call 1-844-334-2869 for help adding those to your plan. If you’re an existing customer, your extra sensors will be installed separately for a reasonable fee. If you’re a new customer ordering now, your extra sensors will be installed along with all other equipment included in your plan.

How do I replace the battery in my door or window sensor?

When you order an ADT-monitored plan, your sensors come with a long-lasting lithium battery included—so hopefully, you won’t have to worry much about replacing the battery. If you do end up needing to change it, follow these steps:

●  Carefully remove the larger sensor case and find the battery.
●  Remove the old battery and replace with a fresh CR123 lithium battery.
●  Replace the sensor cover.
●  You’re finished!

Will these sensors detect it if someone breaks my window?

These sensors detect only the opening and closing of the doors and windows they’re added to, but ADT-monitored plans do offer glass break sensors as a supplement to your door and window sensors, especially for windows with no open-close mechanism. Plus, each glass break sensor can monitor several windows at once, which helps keep your extra costs down.