How to Change the Combination on My Cannon Safe

Written by elizabeth falwell
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How to Change the Combination on My Cannon Safe
Cannon manufacturers heat-tested, tamper-resistant gun safes (Two guns isolated on the white background image by Elnur from

Cannon is a manufacturer of gun safes. All of Cannon's safes undergo rigorous testing to make sure they can withstand heat, fire and tampering. But out of all of Cannon's safety measures, the combination lock on each safe is the first line of defence. Cannon uses three different brands of locks on its safes: Sargent & Greenleaf (S&G), SecuRam and Loss Prevention (LP). The steps for changing lock combinations differ for each of these models.

Skill level:

Things you need

  • Owner's manual
  • Current lock combination

Show MoreHide


  1. 1

    Consult the owner's manual that came with your Cannon gun safe. If you cannot locate your owner's manual, you can download one at the company's website, or you can call the company's customer support line at 1-800-242-1055. The information you're looking for is which type of combination lock your safe has.

  2. 2

    Open your Cannon gun safe using your current combination (this is a series of six numbers).

  3. 3

    Turn the safe to "locked" mode with the door still open. You can do this by turning the handles on your safe to the locked position, or on some models, by pushing a release at the bottom of the safe.

  4. 4

    Change the combination on your safe. For an S&G safe, press "7-4-" to enter the combination changing mode. Enter the existing code, followed by the "#" button. You'll hear a series of beeps. Next, press "1-". Now, you're ready to change the combination. Enter your new six-digit combination, followed by the "#" key. You should hear a series of beeps to let you know the new combination is valid. Next, enter the combination followed by the "#" key once more; another series of beeps will let you know the combination has been changed.

    On SecuRam locks, press the "0" key six times. Enter your current six-digit combination. Then, enter the new six-digit code twice. You only have 20 seconds to complete this process, or the lock will reset.

    On an LP lock, press down on the "0" key under the LED screen until the lock begins to blink. Enter your old six-digit combination. Enter your new six-digit combination; the LED screen will blink to confirm the combination. Enter the new combination once more. If you see the LED screen blink again, you'll know the combination is valid.

  5. 5

    Test your combination out a few times with the door still open. This will ensure that the combination is valid.

Tips and warnings

  • Move through the steps outlined above at a rapid pace; pausing for more than a few seconds between pressing the buttons for your combination will cause the lock to reset.
  • Entering the wrong combination on your lock multiple times could cause it to shut down. On the SecuRam and LP locks, four incorrect entries will cause the lock to shut down for five minutes. After four incorrect entries, the S&G; locks will shut down for 15 minutes.
  • Cannon urges consumers to avoid locking their owner's manual in their Cannon safe. This can make it difficult to troubleshoot problems in the event that you can't get into your safe.
  • Use extreme caution whenever working with or around guns. It is best to store guns and ammunition separately, and never store a gun loaded.

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