: Garmin Echo Series Tm Speed Sensor (4 Pin) (010-10279-04)

The speed sensor that Garmin had originally recommended for use with the echo 200, 300c, 500c and 550c was a 7-pin speed sensor (010-10279-02) that required the use of a 4-pin to 7-pin adapter cable (010-11616-00). In an effort to helpstreamline the installation of the speed sensor for the echo series, Garmin are now offering this new 4-pin speed sensor designed exclusively for compatible echo fishfinders. Simply mount the new speed sensor on the transom of your vessel and connect it to a compatible echo series fishfinder. No adapters needed!