I bought a SUNLU Filament dryer to help solve my filament moisture issues ( https://amzn.to/2JTUdNk ).
I designed a mount to use the small rectangular temperature/humidity sensors ( https://amzn.to/372N2eJ ).
It uses the upper filament port to mount. That way no modifications are required to the dryer.
Print nut and bolt with 0.10 mm layer height
The author hasn't provided the model origin yet.