Tandem Insulin Pump Outlet Plate Wall Holder

A simple, non-permanent wall holder for the Tandem t:slim pump that installs behind an outlet plate and charges while docked.

This 3D-printed wall holder is designed to securely hold a Tandem t:slim insulin pump, with or without a protective case. It is optimized to fit pumps using cases with an optional belt clip, but also works well without a case.

The holder does not physically attach to the wall or use the outlet screw directly. Instead, it installs behind a standard electrical outlet cover plate and is held in place when the cover plate is reinstalled. No drilling, no adhesives, and no longer screws are required—the existing wall plate and screws work as-is.

Once installed, the pump can be placed in the holder and charged at the same time using the standard Tandem wall (micro USB) charger plugged into the same outlet.

I’ve personally used this design daily for over 4 years with no issues. I use it in my bathroom so I have a safe, consistent place to hold and charge my pump while showering—without worrying about it falling off a counter or shelf.

Features

• Compatible with Tandem t:slim insulin pumps
• Works with or without a case (designed to fit cases with belt clips)
• Installs behind the outlet cover plate
• Uses existing wall plate and screws (no modifications needed)
• No permanent wall attachment or wall damage
• Allows charging while docked
• Ideal for bathroom use
• Proven long-term, real-world use

Printing & Assembly Notes

• Printed in two parts and bonded together using gel-style super glue
• Two versions included for different outlet cover plate sizes
• Both sizes are provided—print the one that matches your outlet plate
• Printed in PLA (this is what I’ve used successfully)

Disclaimer

This model is an accessory only and not a medical device. Always verify proper fit and secure installation before use.