Smart Sock 3: Yellow Notifications

Yellow notifications indicate that the Smart Sock is not able to get a good reading. This could be caused by poor placement, wrong size sock, cold feet, ambient light in the room is too bright, or too much motion.


Below are the most common issues and solutions.

The Smart Sock is intended to be used to monitor while the infant sleeps.

If you monitor while your child is awake yellow notifications may occur frequently. To avoid notifications while your child is awake during feedings and diaper changes you can turn off monitoring by powering off the Base Station - but don’t forget to turn it back on when your little one goes back to sleep.

Excessive Movement

The Smart Sock 3 is capable of getting readings through gentle motion. When the Sock is unable to get a reading the app will show a wiggling feet image and the base station will display a bouncing green light while it attempts to get another reading. If excessive motion persists for 4 minutes, this will trigger a yellow notification.


Smart Sock 3 is intended to fit infants from 5lbs to 30lbs. Ensure you are using the proper size Sock for your infant. 

If the Sock is too small or too tight, it may cut off circulation. If the Sock is too big, it won’t be secure enough to get a consistent reading and will trigger a yellow notification.


Verify that the Sock is placed properly as shown in this placement guide.

Additionally, you can place a normal sock over the Smart Sock to help keep the sock in place and the foot warm.

Dirty Sensor

Check to make sure the Smart Sock and Sensor are clean. If the Smart Sock Sensor is dirty it may obstruct the sensor’s ability to get a reading.

Follow these cleaning instructions to clean the Smart Sock every 2 weeks at a minimum. Check out our washing guide to learn more.


If persistent yellow notifications are not resolved by checking each of the above-mentioned common issues, please chat with one of our technical support experts

  • Click the ‘Help’ icon on the bottom right of the page.
  • Call our technical support experts at 844.334.5330 Monday through Sunday from 7:00 AM to 10:00 PM MST.

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