Provides protection against accidents caused by gas vapor spills or leaks. Remote sensor monitors bilge/engine compartment during and after fueling. Full 5 year service lifeRe-engineered "Plug and Play" designDual microprocessor technologySmart sensor block for improved performanceAdd 2nd Sensor Block for additional coverage on larger boatsUse 2nd Control Panel to alert those in other areas of the boatMeets the test requirements as specified in ABYC A-14 and UL1110