Housing for the PWM Driver module I found on Amazon. The module can be found here: Amazon.com: PWM Driver Module, DC 12V 24V 48V 2 Channel 4-Wire Fan Temperature Controller Speed Governor Display Module for PC Fan/Alarm : Industrial & Scientific
The current version of the housing requires the two main pieces being glued together. The three buttons can be inserted with the larger diameter portion being inside the housing. This will allow the buttons to be pressed from outside the housing.
The author marked this model as their own original creation.