Contact Us

If you still have questions or prefer to get help directly from an agent, please submit a request.
We’ll get back to you as soon as possible.

Please fill out the contact form below and we will reply as soon as possible.

  • Contact Us
  • Log In
  • Home
  • Support
  • Sentrilock Support
  • Lockboxes

SentriGuard® Lockbox Battery Information

Written by Juston Johnson

Updated at October 15th, 2025

Contact Us

If you still have questions or prefer to get help directly from an agent, please submit a request.
We’ll get back to you as soon as possible.

Please fill out the contact form below and we will reply as soon as possible.

  • Sample Public: Our Values
  • Front Desk Procedures
  • Support
    Inter Office Contact Distribution Services / IDX feed support RMLSweb Support RMLS Subscriber Membership Support Sentrilock Support REALTOR® ASSOCIATION FAQ'S RMLS Showing Services
+ More

 

FAQ's

  1. Battery type: CR123A w/ pigtail. It has a 10 year lifespan depending upon climate, storage, and use
  2. Emergency battery to power up to 100 cycles
  3. Is there any power when you push the keypad buttons? 
    1. No, you will engage the backup battery which allows you to have temporary power supply 
      1. Use a pen to press and hold on the center button, located between the two led indicators to engage backup battery
  4. How do I change the battery. You can watch the video and or follow these steps:
    1. Engage the Backup Battery
      1. Press ‘ENT’ on the lockbox
      2. If nothing occurs, take a pen or a small object and locate the center button on the lockbox. You can find it beneath the SentriLock logo and just above the keypad. This button is situated in the middle of a set of three buttons. The LEDs next to it will flicker and this indicates the backup battery is engaged
    2. Release The Shackle
      1. Use your SentriKey app to connect to the lockbox and release (and remove) the shackle
    3. Change The Battery
      1. Once the shackle is removed
        1. Remove the rubber plug on the top of the lockbox
        2. Using a T-15 TORX screwdriver, remove the screw
        3. Once done, remove the top cap of the lockbox. This will expose the battery
        4. Next, unplug the old battery and replace it with the new one
    4. Reassemble The Lockbox
      1. Put the top cap of the lockbox back on
      2. Make sure the gap between the top cap and the lockbox is as small as possible using a firm push
      3. Put the screw in and secure it with the T-15 TORX screwdriver by rotating it towards the right
      4. Insert and push in the rubber cap
      5. Put the shackle back into place
  5. Update the firmware
    1. Launch the SentriKey® Real Estate app
    2. Open The Menu in The Top Left
    3. This menu is often called the “Hamburger Menu” and is 3 horizontal bars stacked on top of one another in the top left corner
    4. Tap ‘My Lockboxes’
    5. Select ‘Update Firmware’
    6. Press ‘ENT’ on Your Lockbox
    7. This will take you to another screen
      1. Click Update Now
      2. Wait For The Firmware To Update. It is normal if the lockbox lights begin to flash
      3. The Lockbox Firmware Has Been Updated
      4. You should see a screen that says ‘Success!’ which indicates the firmware has been successfully updated.

 

 Engage the backup battery              

Remove the screw in the middle

 Insert the plug  and sit flush      

Make sure there is only a small gap 

           

 

sentriguard® replace batteries

Was this article helpful?

Yes
No
Give feedback about this article

Related Articles

  • Lockbox Battery Lifespan: Maximizing Performance and Reliability

About
Services
Resources
Join RMLS
Contact

Follow us

  • Follow
  • Follow
  • Follow
  • Follow

RMLS Corporate Office
16101 SW 72nd Ave.
Suite 200
Portland, OR 97224
503.236.7657

Privacy Policy and Terms of Service
Digital Millennium Copyright Act (“DMCA”)

RMLS © 2024. All Rights Reserved.

Expand