I haven't used this one personally, but I use their 'normal' outlet switch and have been happy with it.
Wyze Outdoor - 2 holer
Looks like the two outlets can be controlled separately
Enclosed are some pictures with a way I did this a few years ago.
It turned out juicy and good, I don't recall how the smoke did, but looking at the picture of it cut I'm not seeing a strong ring.
I'm going to guess I wrapped it to rest as I don't see a temp drop mid cook but that's...
This cooler looks amazing! Advertised to keep hot things hot, and cold things cold. Looking forward to taking one to a picnic this year with brisket and home made ice cream