The guys doing road work would wrap up tortillas and such in foil and bury it in the hot blacktop for lunch.
I was offered some but passed.
I think there was a whole series of a guy cooking on his engine block during road trips.
I worked construction, outdoors for most of my career. My idea of a hot lunch was whatever I could stick on the defroster of my work van.
I used a wide mouth thermos for soups and stews. Put hot dogs with hot water in it a few times.
We would break out a grill once a month with the crew...
I have several of the round dots just for roasts. This one seems newer.
https://www.thermoworks.com/square-dot/
Edit: Never mind I see you want remote.
https://www.thermoworks.com/smoke/
I bought that Smoke for my WSM. It works fine for me in my backyard but then I bought a Char Griller Auto Kamado which has two probes and a app and the Smokefire EX6 which has 4 propes and a app.
The Smoke has been delegated to backup, or only when I wheel out the WSM for overnites or more...
They really made it a point to level out the chassis and lock down and raise the wheels for no movement.
I would think that's for using water, somewhere.
Sorta reminds me of Montreal steak seasoning or Weber's Chicago steak seasoning.
I have some " Back of the yards " seasoning from "The Spice House" and its similar.