From the DeepSky Dad website:

Making flats can be quite cumbersome, especially if you stride towards automation and simplification of the process. Our flap panel makes making flat frames with your refractor telescopes part of automated routine, without hacks like LCD screens, sky with T-shirt etc.

While you image, flap panel is neatly tucked away next to the refractor tube. When you finish imaging, you simply close it up and turn on (dimmable) LED light. You can adjust the brightness according to your camera responsiveness/gain settings and different filters.

For software: https://shop.deepskydad.com/product/william-optics-gt-71-fp1/