Humminbird Idmk-h12r Flush Kit For Helix 12Humminbird IDMK H12R Reinforced Flush Mount Kit For Helix 12 Model: 740175 1 In dash mounting kit for the HELIX 12 Series of fish finders.

RS-232 polarity Recieving Method/Frequency 16 channels parallel (up to 3 for WAAS Satellites)

Garmin GT23M-TM Plastic

You see everything below and off to the sides of your boat in amazingly sharp

so having a NAVDoctor in your toolkit

MMC-21HB Humminbird 21-Pin Cable

Model: 1810630

Since the echoes move in real-time

Now works with the popular Navionics Boating App for Apple iOS and Android to display GPS and AIS data on your Navionics charts

Ingress Protection Standard (IC-M400BB and HM-195SW) Water IPX7 (Waterproof protection

while two SideVü sonar frequency settings (455/1200 kHz) provide options for extended range of up to 500’

ideal for both indoor and outdoor installations

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