I saw this sitting around my office for years and finally asked around and was allowed to take it. Did some research, and I think it’s a device used to measure the temperate of water circulating in commercial A/C systems, and then can actuate a valve to turn off or on the flow. I attempted to sell it on ebay, but had no luck, and it looks totally unused so I hate to see it go to a landfill. If anyone is interested in this, let me know!
Here’s a link to the data sheet
