Adapter Kits - MKR-US2-11 Extension Cable--Universal Sonar 2Choose from any of the following plug-in adapters to connect your motor to your favorite brand of sonar or fishfinder (200 kHz and 200kHz/83kHz DualBeam Plus compatible).Utilize dual beam compatibility (all Humminbird DualBeam PLUS and select Lowrance and Garmin units) to see the water at 20&#deg; and 60&#deg; angles, or combine the two views for a new perspective.IP68-rated waterproof connectors are metal tipped to prevent sonar interference.14 1/2" Universal Sonar 2 extension cable for use with all accessory adapters