Brian is correct.
I purchased one of these Water level detectors a couple of months ago and installed in the basement for my sub pump and installed as a door/window sensor within AHP and also installed as a sensor on the security Unit. When water is detected it sends a panic type alarm to the security Unit and alarms. I also have a Macro setup to both email me of the water detection and a voice warning with BVC.
Cheers,
Nate