The Rule High Water Bilge Alarm consists of a float switch and an in-dash gauge that features both a visual and an audible 85 db alarm. This unit allows anunmanned compartment to be constantly monitored. For additional compartments add additional Rule Float Switches. Complies with CFR182. 530 which requiresa visual and audible alarm in each unmanned space on commercial vessels atleast 26' (7. 9m) in length. 24V, 10A. Wire Gauge is 14AWG. Dimensions are 2-1/4" x 5" x 2"