Smoke Detector Decoy

Fake smoke detected for use in hiding something installed on your ceiling that you would rather not explain to people if they see it.  The base plate attaches to the ceiling.  The detector attaches to the base plate with a slight turn to the right and then can easily be removed when needed.

Print Settings

Supports: Tree (auto).  For the detector body you can also set supports to use the build plate only.
Layer Height: I'd choose a fine layer height so the result looks real.  Some may also want to sand the final product as well.