Raymarine i40 Bi-Data with Thru-Hull Transducers Raymarine i40 Bi-data System<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>The i40 Bi-Data gives you all the information power of the individual i40 Speed and i40 Depth units</li><li>Provides independently selectable speed and distance units， shallow alarms and resettable minimum-depth memory， deep and shallow anchor alarms and water temperature information</li><li>Display can be used as a repeater for depth， speed and temp</li><li>Raymarine， the world leader in marine electronics， develops and manufactures the most comprehensive range of electronic equipment</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41TAeBm41fL.jpg" noproxy>