HC-SR602 pir magnetic housing

It's designed for ⌀8*2.7 mm magnets and for a 40 mm wide steel girder, but the dimensions of box, wall thickness, pir sensor eye position, spacing, magnet size can be changed in the first lines. It also might be needed to change the arch anker point if the housing is too small for too big magnets. The arch helps to make the model printable in one part.

The slot on the top is not only for cables, but also for a small screw driver to turn in the screws.

I'd recomend gluing in the magnets after screwing in the module, otherwise the magnets will try to steal the screws.

If needed, the open side can be sealed with a piece of tape.

My HC-602 modules don't have an LDR soldered on (it's always dark when the light is off), but there is enough room left and modules with LDR should also fit.

It's possible to add a status LED to light up the eye of the motion detector on detection, but there is no fixture for this, because I'll solder mine onto the motion sensor. Also the power bank will be removed and it will switch the real room light later.