How To Change Your ADT Home Security Alarm Code

If you need to change your ADT security alarm code, there are different ways you can do so. The first and most obvious way is to call customer service and have them give you a new one. However, if you have a smartphone or tablet, you can use the ADT Pulse app to change it yourself. The third and the most convenient way is to find your alarm panel, which is usually located near your main entrance door. Then,

  • Enter the existing code in the control panel keypad. Press *94. The display should show “Code” and a flashing number. Your current code is displayed on the ADT keypad screen. This will give you a chance to double-check that you’re changing the correct code before entering a new one.
  • Enter your new four-digit code. You can use any numbers or letters with the exception of 10, 11, 12, and 13 because these numbers are reserved for special functions on the control panel.

We will go into more detail below.

How do I change my alarm code?

Changing your alarm code is simple and can be done in just a few steps.

Once you’ve established your new code, it’s important to remember that the process for changing it is different for each ADT system. For example, if you have an ADT Pulse set up with an iHub, you will need to first use the touchscreen control panel or keypad to change the master code before logging into your ADT Pulse account and using the website or mobile app to create a new user code.

If you do not have an iHub and only have a traditional keypad, you can change your system’s user codes directly from the keypad itself. If you don’t know what kind of system you have, refer to your installation paperwork or contact ADT Customer Service at 1-800-ADT-ASAP (1-800-238-2727) for assistance.

If you’re sure that you know what type of system you have, read on for detailed instructions on how to change your alarm code on an ADT Pulse interactive or non-interactive security system.

login screen to ADT Pulse
Video | Kimavi

What If I Forget my ADT Code?

If you can’t remember your alarm passcode, you can follow these steps to reset the code. You will need the master code for this procedure. The master code is required to set or change user codes. If you don’t know the master code, call 800-ADT-ASAP (238-2727).

  • Disarm the system using your current passcode
  • Enter your four-digit master code followed by “8” and then “0” (for example, 123480)
  • Enter a desired four-digit number to be assigned as a new passcode (for example, 4321)
  • Press “OK” twice to confirm the new passcode
  • Exit programming mode by disarming the system (1)

Can I Give Temporary Users Access to my System?

Yes. For example, if you have a house cleaner or babysitter who comes by once a week, you can set up a weekly code that’s separate from your master code. That way, you can deactivate the weekly code after the housekeeper leaves and not worry about her having ongoing access to your home. (2)

What’s the Difference Between a Master Code and Other Codes on my System?

The master code is usually assigned when you first get your system. It’s typically used for arming and disarming your system. Other codes, such as user codes and service codes, allow different levels of access to the system—for example, some may allow a user to arm and disarm the alarm, while others may only allow arming and disarming of specific zones (groups of sensors).

(1) programming mode –
(2) house cleaner –

Video References



How helpful was this article?

Were Sorry This Was Not Helpful!

Let Us Improve This Article!

Please Tell Us How We Can Improve This Article.