Garmin Reactor™ 40 Steer-by-wire Corepack with GHC™ 20 (010-00705-86) is a solid-state autopilot system built for vessels with electronic steer-by-wire controls (such as SeaStar Optimus, Yanmar JC10, and ZF Pod drives). Utilizing a 9-axis AHRS heading sensor, it maintains precise course holding without an external hydraulic pump. The corepack includes a 4-inch GHC™ 20 button-controlled display and connects via NMEA 2000® for seamless chartplotter integration.


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