PEARL Guide: Easy Steps to Replace Batteries

Learn the simple, step-by-step process to replace batteries in your PEARL device, ensuring it continues to operate smoothly and efficiently

Table of Contents


    The purpose of this article is to help customers replace batteries in the PEARL unit(s). 

    IMPORTANT: You'll need to replace batteries in both the Main and Secondary units.

    Required Tools and Materials

    • 8x AA batteries
    • Screwdriver (X)

    Which batteries to use?

    • Use brand-new batteries only.
    • The Pearl requires using Energizer Max alkaline. 
    • Other top brand such as Duracell or Costco's Kirkland has been tested with good results. 
    • Do not use Lithium batteries from Energizer as they will not last as long. 
    • Other less expensive options may result in greatly reduced battery life.

    Less expensive batteries issue

    If you're trying a less expensive battery option, note that you might experience issues with your pearl unit as it not getting the proper power needed to function correctly. 

    How to replace the batteries in both sensors

    1. Unscrew the top 2 screws on the back of the sensor.
    2. Slide the casing UP as indicated by the Battery arrow graphic on the casing.
    3. Pop out the 4 depleted AA Batteries.
    4. Pop In NEW never before used AA batteries of the same type.
    5. As the last battery is inserted, turn the unit over making sure that the led turns solid green to confirm its power on. 
      • The main unit should go solid green for 12 seconds then off
      • The secondary unit should go solid green for 5 seconds then off
    6. Slide back the casing.
    7. Screw back the 2 screws.
    8. Repeat Steps 1-6 for the other sensor.
    9. Once the batteries have been changed the light status will be the following:  
      • The Main Pearl ‘M’, will have a solid green light for 12 seconds and will then go off.    
      • The Secondary Pearl ‘S’,  will have a solid green light for 5 seconds and will then go off.
    10. Wait one minute, and your PEARL should be back to operating normally.

    Wait 2 hours for the traffic to update

    Depending on your subscription it can take up to 2 hours for the traffic to update. 

    Questions and Answers

    Q: I keep changing batteries is there an alternate solution? 

    A: Although it is not an SMS-branded solution, we have seen that some customers were successful with power adapters, like this one for example: Lenink AC Power Supply Adapter for 4x AA Batteries

    These should be used for both the MAIN and the SECONDARY Pearl units.

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