The air blast is a pneumatic solenoid.

The coolant is just a pump (.5A).

Both are AC.

Like I mentioned I have successfully turned things on and off, but I occasionally get stuck between states on the SSR's (i'm not able to get it to go below the threshold to turn it off at times), and curiously one command is operating both outputs on the MX3660 (i believe because they are on a common ground of some variety).

I'm considering buying some of the below SSR's as I think wiring would be more straight forward, but the idea of the relay board sucked me in, it's just so clean inside the enclosure. Setup seemed straightforward until I actually had to do it.

https://www.amazon.com/gp/product/B0...2R62OSH2&psc=1