Siren Marine High Water Sensor f/Siren 3 [SM-WLS3-HIWS-917]High Water Sensor for Siren 3 The Wireless High Water Sensor detects if there is water in the bilge and sends an alert to the Siren Marine App if water has risen above the preset level. Mount the Water Probe at the desired height in the bilge and plug the other end into the Wireless Module. Link the module to the Siren 3 Pro and receive alerts if the boat is taking on water. Features: Compatible with Siren 3 Pro only Includes Wireless Sensor Module