Revit 2019 dynamo script to export certain category of RFAs

Hi- I am looking for a dynamo script compatible with Revit 2019 that enables exporting out a particular category of families from the Revit project. Example- I want to export out only electrical equipment from the Revit 2019 project.
I know of dynamo scripts available in 2021, but I am specifically looking for Revit 2019.
Thanks!

How does the graph from 2021 work in 2019?

Note that 2019 is the last year where you had to manually update Dynamo, so make sure you’re up to date and using 2.0.4.