Humminbirds XNT 14 20 T Transducer easily mounts on the boats transom and operates with a compatible Humminbird ONIX and SOLIX. This dual-beam transducer operates on 200kHz and 83kHz frequencies at 20 to 60 angles for stunning underwater imagery. Install it in the hull and pair it up with a MEGA SI transducer using Humminbirds dual-beam Y cable (sold separately) for sonar imaging while youre on plane. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Transducers.