Mine has an 8-pin and I have the CO monitor so second gen unit.
Have you tested the pins yet? Just curious. I am trying to figure out what it will take to go from a 2 pin auto start on my Aims inverter to this same generator. ~SpenceAccording to my conversation with Duromax, They are in the process of building an ATS specifically compatible to their units. They told me 2nd quarter of 2023. The pin out in #8 is what they sent me also. If you look at the diagram, Pin 7 is not used. I have a new unit arriving next week and will be testing each pin.