While you can answer the remaining questions, it may be time to consider getting a new transmitter. Order a new transmitter online or give us a call at 1-800-646-4633, option 3 (Monday - Friday, 8:00 a.m. to 7:00 p.m. CT).

Order a new transmitter →

Great! Please continue answering the questions below for other possible reasons.

Now, let’s make sure your transmitter is fully compatible with your pump:

Guardian^TM 4 sensor is compatible with the Guardian™ transmitter (its upper side has no printing on it).

Guardian^TM sensor is compatible with a Guardian™ Link 3 transmitter (its upper side is labeled with the letters “GL3”).

Once you confirm you’re using the right transmitter, check to see if the CGM serial number that’s programmed into the pump matches the number on your actual serial number. Here are two ways to confirm:

If currently wearing the transmitter, then sign in to your Diabetes.shop account to view the serial number on your transmitter in the current list of devices.

Not wearing your transmitter? Flip the transmitter on to the flat side and look for the serial number, a combination of letters and numbers following “SN.” Press  , then select .

First, make sure that your transmitter is compatible with your pump. When using a MiniMed™ 670G system or MiniMed™ 630G system, you should be using the Guardian™ Link 3 transmitter. (It has the letter “G” on the transmitter.) 

Guardian™ sensor is compatible with a Guardian™ Link 3 transmitter (its upper side is labeled with the letters “GL3”).

Once you confirm you’re using the right transmitter, check to see if the CGM serial number that’s programmed into the pump matches the number on your actual serial number. Here are two ways to confirm:

If currently wearing the transmitter, then sign in to your Diabetes.shop account to view the serial number on your transmitter in the current list of devices.

If you’re using the right transmitter, let’s make sure the transmitter ID is programmed into the pump’s Manage Device screen. Press  and navigate to Options > Utilities > Device Options > Manage Devices.

First, make sure that your transmitter is compatible with your pump. When using the Guardian™ Connect system, you should be using the Guardian™ Link 3 transmitter. (It has the letter “G” on the transmitter.)

Guardian™ sensor is compatible with a Guardian™ Link 3 transmitter (its upper side is labeled with the letters “GL3”).

Sounds good. Please proceed to question 4.

Since you can never simultaneously pair more than one transmitter, make sure you have the right details entered. If your battery was removed for an extended period or completely depleted, having a missing ID is expected. Once paired, your sensor connection should be restored. For more tips, feel free to continue answering the questions below.

Follow these steps on how to pair your pump and transmitter.

Perfect. Please proceed to question 5.

Always charge the transmitter before inserting the sensor. A depleted transmitter does not function. A fully charged transmitter works at least seven days without recharging. A depleted transmitter can take up to two hours to recharge. Here’s how to charge your transmitter: 

1. Push the transmitter and the charger together to connect the transmitter to the charger.
2. Within 10 seconds after the transmitter is connected, a green light on the charger will flash for one to two seconds as the charger powers on.
3. For the rest of the charging time, the green light on the charger will continue to flash in a pattern of four flashes with a pause between the four flashes.
4. When charging is complete, the green light on the charger will stay on, without flashing, for 15 to 20 seconds and then turn off.
5. After the green charger light turns off, disconnect the transmitter from the charger. The green light on the transmitter starts to flash.

For more tips on charging your transmitter, check out this handy guide and always call 24-Hour Technical Support at 1-800-646-4633, option 1 if you have any additional concerns about charging.

If you need a spare charger, you can purchase one on Diabetes.shop.

If the connector pins are damaged or corroded, the transmitter cannot communicate. It is probably time to replace your transmitter. Call us to discuss this 24/7 at 1-800-646-4633, option 1.

We hope this was helpful for you. To summarize:

• Make sure your transmitter is compatible, and the serial number is entered.
• Move your pump and transmitter within 6 feet of each other (for example, worn on the same side of your body.)
   Tip: If you’re doing an activity like swimming where you plan to disconnect your pump, take small breaks so devices have a chance to connect while you’re out of the water.*
• Consider other electronics that could be temporarily causing interference and then move 12 feet away from them.
• Use a transmitter that’s within the one-year warranty for the best performance.

If you have completed this questionnaire and still have questions or concerns, call us at 1-800-646-4633, option 1. Our Technical Support team is available 24 hours a day to help troubleshoot and provide support.

We hope this was helpful for you. To summarize:

• Make sure your transmitter is compatible, and the serial number is entered.
• Move your pump and transmitter within 6 feet of each other (for example, worn on the same side of your body.)
   Tip: If you’re doing an activity like swimming where you plan to disconnect your pump, take small breaks so devices have a chance to connect while you’re out of the water.*
• Consider other electronics that could be temporarily causing interference and then move 12 feet away from them.
• Use a transmitter that’s within the one-year warranty for the best performance.

If you have completed this questionnaire and still have questions or concerns, call us at 1-800-646-4633, option 1. Our Technical Support team is available 24 hours a day to help troubleshoot and provide support.