Dual Pro B.O.S. Battery Optimization System - 12V - 2-Bank [BOS12V2] Marine Hardware | Vents All of our air horns

All of our air horns produce sound levels ranging between 120 and 127dB

and bar graphs

Utilizing advanced fan blade design techniques

4000 lb vertical lift capacity (single line) or double pull/line capacity 7500 lbs

Dual Pro B.O.S. Battery Optimization System - 12V - 2-Bank [BOS12V2] Marine Hardware | Vents All of our air hornsB. O. S. Battery Optimization System 12V 2 Bank B. O. S. actively shuttles energy between batteries to keep the pack balanced, increasing battery strength and longevity. Batteries in a pack will become out of balance and the pack is only as good as its weakest link. In watercraft applications, this is further compounded when the trolling motor battery is used for peripherals and or to assist the cranking battery. B. O. S. actively shuttles energy as