Designed to be screwed into the wall. There's enough space in the back to feed the cable through, and the (pictured in orange) handle allows a screw to fix the beacon in place via the beacon's bottom tripod mounting point. A hex bolt with a 10mm head was used in this case, but you can simply use any screw that works and fill the rest of the cavity with hot glue if you do not wish to modify the design. While the beacon probably wouldn't fall down if you don't use this screw due to the small lip, I highly recommend using it.
See the second image for recommended print orientation. No supports are required, although I do recommend slicing/printing with brim.
The author marked this model as their own original creation.