If you already own a Dakota Alert System or EZIO Receiver, protect your property from costly water damage by installing this wireless flood and leak sensor near water pipes in places like basements, laundry rooms and kitchens. The sensor is comprised of a small sensor mounted where you need to detect a water leak and a transmitter that mounts to the wall and is powered by a single 9V battery (sold separately). The sensor can detect water more than 1/16" deep. The transmitter has a range of up to 3,000ft (line of sight). They are connected to each other by way of a 6ft cable.