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White rectangular marine GPS receiver with integrated heading sensor

HUMMINBIRD

HUMMINBIRD 408400-1 AS GPS HS External GPS Receiver with Heading Sensor Marine Electronic

SKU CH-1QCT-T6C5S MPN 408400-1

External GPS receiver with heading sensor delivers accurate position fixes within 2.5 m and compass data while stationary or moving

  • Product weight2.5
  • Precision GPS antenna with heading sensor for accurate positioning
  • Heading sensor shows compass data and boat orientation while stationary
  • Marks exact waypoints anywhere on screen using 360 Imaging
  • Delivers reliable Course Over Ground readings within 2.5 m accuracy
  • Compatible with ONIX, HELIX 9, 10, 12 and select 800, 900, 1100 series

Precision GPS Antenna with Heading Sensor

The Humminbird AS GPS HS is an external receiver that adds precise positioning and orientation data to compatible fish finders. It delivers accurate course-over-ground readings and position fixes within 2.5 m, even in lower signal areas. The unit is designed for mariners who need reliable waypoint marking and compass information while moving or sitting still.

Integrated Heading Sensor for Continuous Orientation

The built-in heading sensor provides real-time boat orientation without relying solely on satellite movement calculations. This allows the display to show compass data and vessel heading instantly, whether the boat is drifting, trolling, or holding position. The combination of GPS and heading data ensures the screen orientation matches the actual boat direction at all times.

Compatibility Limited to Listed Humminbird Series

This receiver works only with specific ONIX, HELIX 9, 10, and 12 models, as well as select 800, 900, and 1100 series units plus AS 360 modules. It will not function with other brands or unlisted Humminbird displays. Verify your exact model number against the supported list before purchase.

How it compares

Measured against everything we stock in Boat Audio & Electronics, at today’s prices. Recalculated every night.

Price $134.99
Pricier than about 71% of the 312 comparable items (median $69.49).

Specifications

Product
Brand nameHumminbird
Size & build
Shipping weight0.91 kg
Package size330 × 229 × 203 mm

Questions about this item

Does the 408400-1 draw noticeable power or generate heat during continuous use on the water?

The external GPS receiver with heading sensor is a low-draw antenna module; it adds no measurable heat and negligible load to the boat's electrical system during all-day operation.

Which Humminbird displays must I already own to connect the AS GPS HS?

Compatible units include ONIX series, HELIX 9, 10 and 12, 800 series models 859 and 899, 900 series models 959 and 999, 1100 series models 1159 and 1199, plus AS 360SSI and AS 360 TM modules.

Will the heading sensor work correctly alongside my older 800-series combo unit?

Yes, the integrated heading sensor provides compass data and boat orientation to supported 800-series models such as the 859ci HD Combo and 899ci HD SI Combo for accurate course-over-ground readings.

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