Something to protect the Switchbot Lock Pro Magnet that's used to determine the door position.
Overall cover size of 40mm x 80mm gives lots of contact area for two sided tape (3M 414 Scotch) to make sure it stays put.

Includes internal print support that pops out after printing.

Print as pictured. No extra supports needed.

Edit: Added "Concealed" versions to completely cover magnet.