Phyn’s number-one competitor, Flo by Moen, introduced a discrete leak sensor in the summer of 2020. Like the new Phyn Smart Water Sensor, the Flo by Moen Smart Water Detector can operate independently or in concert with the Flo by Moen Smart Water Shutoff to prevent water damage. Phyn You can daisy-chain up to three of these 4-foot cables to extend the Phyn Smart Water Sensor’s reach to 12 feet. The entire length of the cable is water sensitive. Phyn’s 3.5-inch sensor operates on battery power and connects to your home Wi-Fi network. It can be placed on the floor or, with the addition of a $10 extension node or a $26 4-foot sensor cable, hung on a wall. The add-on extension and cable accessories increase the area that the sensor can monitor for water and also enable the sensor to be used in tight-fitting spaces.