Siren Marine Bilge Pump Sensor Fsiren 3 (Sm-Wls3-Bilg-917)Bilge Pump Sensor for Siren 3The Wireless Bilge Pump Sensor monitors bilge pump activity, including run time and daily cycles. Attach the Bilge Pump connector to the bilge pump and plug the other end into the Wireless Module. Link the module to the Siren 3 Pro and receive alerts if the bilge..