BILGE ALARM / WATER LEVEL SWITCH BLS 9200 Bilge Switch
CP Performance - Bilge Alert High Water Alarm w/Float Switch
Alarm bilge high water 24V includes float switch & audio-visual alarm
Internal Bilge Pump Switch with Alarm.
Amazon.com: Electric Field Bilge Pump Switch, DC12V/24V Marine Electric Field Sensor Switch Intelligent Automatic Alarm Water Level Sensor Switch Float Switch, Up to 20A : Sports & Outdoors
BILGE PUMP 12V LOUD TONAL ALARM W/ SHUTOFF PANEL + SIDE MOUNT FLOAT SWITCH | eBay