Can someone explain how that PAC controller works? I see a dial and a button on one box and I'm not sure what they do. What is the little black box is on the right and what is the box that says PAC? And what is the red LED between the dial and button? I've done a search and can't find any better pictures or description of the various dials, buttons and LEDs on the alkycontrol progressive controller. Here's the photo from alkycontrol.com
Thanks,
RichJ

Thanks,
RichJ