Yup, I'm familiar. I work in the state climate office and sometimes help service the stations. It's mostly a mix of Campbell Scientific EE181 and HC2S3 (more of the former). Then there are 14 stations that use Peet Bros equipment, which is more akin to backyard-type weather stations. With one exception (Harrison) and aside from the Peet Bros stations, we don't pull in any PWS data. We also bring in other professional networks, such as ASOS, AWOS, RAWS, some USGS, and a few others.
If you go to any station page (e.g., Little Falls here), near the bottom of the page you can see photos of the site and a list of installed equipment.