Reset System

After an alarm event it may be necessary to clear, or reset, the system display. Use the codes below to reset some of the most common ADT systems. If you do not see your system below please refer to your system manual.

Unsure which system is yours?

  1. While logged into MyADT, click on the blue Overview tab located on the left side of the top menu.
  2. On the Overview page, to the right of the Bill & Payment Summary section, you will find “System Information”.
  3. The name of your system will be shown (e.g., Safewatch Pro 3000).

Common Reset System Keypad Combinations:

Ademco Lynx:  Additional Functions

[security code] + [OFF]


Ademco Vista 20P:  Additional Functions

[security code] + [1]


Ademco Vista 20SE/HWSE:

[security code] + [1]


BHS 4000:  Additional Functions 

[security code]


DSC Impassa: Additional Functions 

[*] + [3]


DSC PC 1555:  Additional Functions 

First arm system with your [security code], then disarm system to clear the event history.


ITI Concord Express:  Additional Functions

press [1] + [security code]


Safewatch Pro 3000:  Additional Functions

[security code] + [1]


Safewatch QuickConnect Plus:  Additional Functions

[security code] + [OFF]


Simon XT: Additional Functions



TSSC: Additional Functions

[security code] + [OFF]


Don't see your system listed here? Please refer to your system manual or search our Help Center for more information.

Related Topics

Bypass a Zone
Information on how to bypass a zone on the most common ADT systems.

Testing Your System
Here are instructions for placing your system in Test mode, and for removing it from Test mode once the test is complete.

Silence Low Battery Beeping
Here are instructions for silencing your keypad when it has detected a low battery condition.