This enclosure “Sonoff MINI box” fits all of the mini sonoff “DIY smart switch” range:

• MINI-RBS
• ZBMINIR2
• MINI-ZBRBS
• MINIR4M
• MINIR4

Select the alternative model “Sonoff ZBMINIL2 ONLY” for the ZBMINIL2, as this is a few mm taller.

The cable entry is sized for 2x 1.5mm2 twin & earth (approx 8x5mm cable).

The lid snaps into place and can be removed again without damage with a good amount of pressure.

No supports are needed for printing, i would recommend mouse ears to prevent warping. Works fine with PLA, i would give it 20% infill to keep the lid & base solid.