2nd Remote Head for MGD-10XLProvides protection against accidents caused by Gas/Propane spills or leaks. Remote sensor monitors bilge/engine compartment during and after fueling. Install sensor in galley or LP tank locker to protect against propane leaks.Features:Sight and Sound Alarm Indicator. Dual signaling sounds an alarm and activates warning lightMarine ProvenExclusively designed for the harsh marine environmentSmart SensorDetects the build up of explosive gasesOn/Off/TestFor one touch analysis of detector performanceMoney SavingQualify for marine insurance discounts