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The NL4 replaces your paddle-wheel with a GPS Receiver.

Paired to a GPS receiver, the NL4 emulates the paddle-wheel’s speed for a seamless

Integration... The GPS velocity is fed into your boat as if it were a paddle-wheel.

 You’ll enjoy the reliability and accuracy inherent with proven GPS technology.

This will eliminate the inconsistent speeds, the frequent calibrations and  

general headaches associated with paddle-wheels.   

IT’S PLUG AND PLAY. NO CUSTOM WIRING REQUIRED: Separate the

 Paddle-wheel connector from the computer, and insert the NL4 in its place.

Position the GPS receiver on your boat.

Thread its cable to the NL4 and insert... You’re done!


A second connector is provided for Lake Temperature (and Depth). Reinsert the

 loose paddlewheel connector into it, and the secondary functions are preserved.



Pckg Prices NL4-SR is shown Locate the Paddlewheel connector FAQ HELP, I can't find my upgrade models