Wish you could shut off the water from a switch inside the house? Now you can, using your WaterCop Wireless Leak Detection System with this optional Remote Water Shut-Off Switch, which mounts on the wall. LEDs indicate the WaterCop's current status at a glance. Connects with Cat. 5 cable (sold separately). Prevent uncontrolled water and freezing pipes from damaging your home and belongings with the WaterCop, a wireless leak detection system that automatically shuts off your main water line when it senses a leak from your home's water appliances or plumbing fixtures. The main system consists of a WaterCop electronic shut-off valve and three wireless, battery-operated WaterHound probes. The shut-off valve installs on your home's main water line between the existing shut-off valve and the location where the plumbing main begins to branch off to water appliances, like washing machines, water heaters or dishwashers. The main unit plugs into any standard 3-prong power outlet with its 8-ft. extension cord and features green and red LEDs indicating if the water flow is open or closed.