Image of Guardian Protection's Simon XT device

How to replace the batteries

Watch a step-by-step video for replacing the batteries in your Simon XT Panel.

To replace your panel’s battery, please follow these steps:

  • Log in to your Guardian Protection account.
  • Select System Info and then select Test My System.
  • Disarm your system.
  • Remove the AC Adaptor from the outlet.
  • Remove the small screw at the top of the panel if applicable.
  • Hinge downward the front of your panel by gently pulling it away from the mounting plate.
  • Separate the battery retainers and pull the battery out by disconnecting the wires from the battery.
  • Replace the batteries by reconnecting the black wire first and the red wire last to the new battery pack.
  • Swing the panel back up and lock it into place.
  • Replace the screw at the top of the panel.
  • Plug the AC Adaptor back into the lower plug outlet, screwing the screw back in.
  • The low battery notification on your panel should be gone automatically.
  • Test your system to make sure it is working correctly.
  • Take your system out of test mode.

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Panel manual