Note: The Stabilizer Ring is now included in every PulseSensor Kit purchased after May 2026. This page is for spares, replacements, classroom sets, and multi-finger projects.

When a spare is useful

• Classroom sets — students sharing or losing rings
• Multi-finger or two-handed projects — measuring more than one fingertip at a time
• Replacements — lost, worn, or color preference
• Different colors for project differentiation or matching your build

More Stability = Better Readings

You know the deal — your PulseSensor is incredibly sensitive, which is usually a good thing. But sometimes a minor movement can throw your data into chaos. The Stabilizer Ring is a knuckle-sized, custom-fit piece that elevates your pulse readings from good to great by minimizing motion artifacts.

Comfort, Quality, and Free Fingertips

The Stabilizer Ring enhances user comfort for both short-term and long-term readings. It also expands your freedom of movement while wearing the sensor. You can move more naturally without compromising the sensor's accuracy. Best of all, you can wear it like a ring and still be free to code, craft, and create with your fingertips.

How It Works

The PulseSensor itself snaps into place on the ring's cut-out. Then, use the Velcro Finger Strap from your PulseSensor Kit to secure it for a sturdy fit.

Free 3D-Printable File

Have a 3D printer at work, school, home, or a maker space? Download the .STL file and print as many as you need.

⬇️ Download the Stabilizer Ring STL

Material & Sizing

See the Amazon listing for current spare-ring material, sizing and color options. To print your own ring, use the free STL linked above.

Sales Policy

For rings purchased on Amazon, check your Amazon order for return and replacement options.

For previous ring purchases directly from PulseSensor, all sales are final and defective items will be replaced within 30 days of purchase. Email support@pulsesensor.com with any issues.