Quick view Direction-Plus Fuel Manager Water Alarm System Kit FMALARM for FM100 Compare MSRP: $150.00 Fuel Manager Water Alarm System Kit FMALARM for FM100Direction-Plus Fuel Manager Water Alarm System is an essential add-on accessory for your new or existing Fuel Manager filter. No more struggling to see if the glass bowl has water in it. Let the alarm... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List