Thank you!
Yes, included are both "well low" sensors and "tank full" sensors, both of which will send a signal back to the controller to shut off the pump. We installed both when we put the well in. The "tank full" sensor required burying a wire that ran the 800' from the tank up on the hill back down to the controller back at the pump. Well at some point after the backfilling, that wire broke so we had to do that manually for awhile (shutting off/turning back on the pump). Thankfully they make a wireless transmitter/receiver setup so we now have that in place.
They're a great company and this is just a "it would be nice/wishlist" project...it's more so to get some practical experience in the Arduino world AND use it with an actual farm project.
Thanks again..I'll update with what I hear back from RPS!