This is a Bosch Pro-Grade ZigBee Wireless Motion Detector holder. https://amzn.to/2DSD8id
The point of this is to make the sensor into an outside sensor.
How to use this:
I will have 2 lids. 1 of them is a simple lid that you just slide in it. You will need some something like silicone (something you can take off since you need to change the batteries every now and then). The other lets you screw the lid on something and gravity should work with you there. You can attach a small bit of silicone or whatever if you think the wind might take it off. (I recommend taking the motion sensors inside during hurricanes for this reason)
I released the Fusion 360 file
Rafts:
No
Supports:
No
Infill:
20
Notes:
You don't need supports, but you can place them if you want.
If you don't use supports, then you might need to clean the bridging slightlyNOTE: Don't use PLA if you're placing this outdoors where it can get hot.