Bilge Alert High Water Alarm - 12V UltimaHigh water alarm featuring digital technology using the patented Mires field effect. Totally sealed fluid detectors are never in contact with water, will not corrode and are not affected by oil or debris. Bilge Alert detects water and sends a signal (3 seconds delay) to the alarm and switch conveniently mounted on a panel. Three way rocker switch allows switch to be tested, turned off and armed. Features:12V high water alarm features digital technologySealed fluid detectors are never in contact with water and are affected by oil or debrisThree-way rocker switch allows alarm to be tested, turned off and armed