Transducer Extension CableUse this 10' (3M) extension cable to connect your 4-pin transducer to your sonar unit.Compatible Devices:echo(TM) 100echo(TM) 150echo(TM) 200echo(TM) 300cecho(TM) 500cecho(TM) 550cWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.