As @FragileCobra_1676165 Shelly plus DIN-rail holders has no version for a Shelly mini, I made a remix of his model to have one.
On the bottom are two openings. (1) is to access the Reset Button of the Shelly mimi, (2) is designed to facilitate demounting the Shelly from the holder.

Layer Highth: 0,2
Infill: 15%
Supports: none
I used PETG, but other materials might work, too.
| Version | Date | Change log | Slicer |
| 1.1 | 28. Aug. 2024 | first publish | PrusaSlicer Version 2.7.4 |
The author remixed this model.
This Remix is designed to hold the shelly Mini Gen3 instead of the “big” Shelly plus