Raymarine Depth Display System w/Transom Mount Transducer i40. The i40 series is simple to operate thanks to the use of just three control buttons i40 has extra-large digits and razor-sharp LCD displays and red backlighting for outstanding visibility in all lighting conditions. These SeaTalk compatible instruments offer full integration with Raymarine autopilots and navigation equipment. The ultra-sleek design of i40 line is designed to complement our full line of a-Series c-Series and e-Series Multifunction displays and looks great on the helm of any boat. All i40 Instruments come with a low-profile surface mounting kit and silicone rubber sun cover. An optional bracket mounting kit is also available separately. i40 Instruments are designed to operate from 12V DC power and are ultra-efficient drawing less than 0.4 watts for superior run-time and excellent green credentials. The i40 instruments are all covered by Raymarine's industry leading 2-year warranty upgradeable to 3-years at no charge by registering online with 90 days of purchase. i40 Depth Instrument Raymarine's i40 Depth Instrument is available as a complete system with a thru-hull transducer transom mount or as a display-only kit enabling you to monitor your boat's depth at a remote location. The i40 Depth Instrument offers easy-to-read displays of current depth and minimum depth recorded. The unit also offers a convenient shallow depth alarm deep depth alarm shallow anchor alarm and deep anchor alarm. The i40 Depth Instrument offers convenient depth offset controls allowing you to calibrate the readout to compensate for projections (rudders props skegs etc.) or to display the depth from the waterline of the vessel. i40 Key Specifications for Raymarine i40 Depth Display System w/Transom Mount Transducer: Manufacturer: Raymarine Color: Black Frequency Band: 200 kHz Screen Size: 3.7 in Features of Raymarine i40 Depth Display System w/Transom Mount Transducer Depth - Max (Feet): 400' Frequency: 200Khz Screen Size: 3.7" Shape: Rectangular Transducer Type: Transom Mount Package Contents: Raymarine i40 Depth Display System w/Transom Mount Transducer Raymarine E70143: Depth Display System w/Transom Mount Transducer i40