New Type of Float Switch?

Saw this today in new construction (can’t get my pic to load so I got this off of the internet).

I’ve never have run across this type of switch before. When I pushed the “test” button, I was expecting the HVAC unit to cycle off. It did not. Should it have?

Any thoughts?

Once again, thanks in advance.

fc56_1.jpg

http://www.diversitech.com/applications/documentlibrary/documents/WS-1%20-%20Wet%20Switch.pdf
http://www.wetswitch.com/

Thanks. Just goes to show how big the internet is. I looked all over for installation instructions.

I’m still missing one piece of information: if you push the test button, shouldn’t the unit cycle off?