Raymarine i40 Digital Depth Sounder with Thru-hull Transducer i40 Digital Depth Sounder with Thru-hull Transducer Raymarine Quality for Any Size Vessel Compact in size and design, yet big on performance and features, i40 Depth offers all essential depth data in clear 7-segment, 28 mm sized digit displays. Depth can be displayed in either feet (FT), meters (M) or fathoms (FA). Minimum depth is recorded from each time the unit is powered up and can be reset at any time. Alarms can be set for shallow water, deep water, shallow anchor and deep anchor. A customer definable keel offset can be set and displayed at any time. If you are looking for powerful, feature-packed instruments in a compact package, i40 is the answer. Elegant and simple to operate, thanks to the use of just three control buttons, i40 has extra large digits and razor sharp LCD displays for outstanding visibility in all lighting conditions. These SeaTalk compatible instruments offer full integration with Raymarine autopilots and navigation equipment. They also offer optional stylish clip-on bezels allowing you to coordinate instruments with your boat as well as options for surface or bracket mounting. So whether its a stand-alone instrument for now or a complete system for tomorrow, i40 keeps your options open for the future. In the box: i40 display Suncover SeaTalk cable Installation hardware Owner's manual Thru-Hull Transducer