The HHGPS cable is used to connect a RS-232 and NMEA 0183 devices to the
GPS/NMEA port on a 300, 500, 600, 700, 800, 900, 1100, or HELIX series unit.

Supported devices may include DSC VHF, Heading Sensors, GPS, and AIS devices.  
Your Humminbird control head manual should be referenced to confirm which devices 
are supported.

Humminbird 700, 800, 900, 1100, HELIX 9, HELIX 10, and HELIX 12 control heads
can supply power to the connected device.

Humminbird 300, 500, 600, HELIX 5, and HELIX 7 control heads do not supply power
therefore the connected device must be externally powered.

The HHGPS Connection Kit Includes: NMEA connection cable, Y-cable, and detailed instructions.
This HHGPS cable requires a RS-232 or NMEA 0183 cable from the device’s manufacture to
complete the connection to the Humminbird control head.