Garmin's Most Responsive Autopilot System on the Water Solid-state 9-axis Attitude Heading Reference System (AHRS)Minimizes heading error, course deviation, rudder movement and power consumption while providing a comfortable ride Minimal commissioning and calibrationSupports heading hold, wind hold, step turns and tack/jibe modes With a complete package designed for powerboats and sailboats, Garmin brings an advanced marine technology to the boating public that was once only available for commercial boats. The Reactor 40 autopilot series is simply the most responsive autopilot system we have ever offered. Reactor 40 autopilots are very versatile. Both powerboat and sailing features are available in all corepacks, including heading hold, wind hold, tack/jibe, step turns and more; simply pick the autopilot thats compatible with your existing steering system. If you dont see a compatible Reactor 40, youll find the Reactor 40 mechanical/retrofit/solenoid is compatible with a wide variety of steering systems, whether hydraulic, cable drive, mechanical and solenoid. Just pair GRF 10with your drive system already on board. The Reactor 40 mechanical/retrofit/solenoid autopilot corepack is ideal for sailboats and powerboats with direct or cable-actuated steering systems. This Reactor 40 below-deck autopilot system gives captains that "extra set of hands" they need so you can safely attend to your sails, lines, winches and radios, without worry. With its solid-state 9-axis AHRS, Reactor 40 mounts anywhere, in any orientation and requires minimal commissioning. Solid-state 9-axis AHRSWith its advanced solid-state 9-axis solid-state 9-axis AHRS, you can mount Reactor 40 nearly anywhere, in any orientation. In addition, this new system greatly minimizes heading error, course deviation, rudder movement and power consumption while providing a comfortable ride for all on board. Reacts to ConditionsThis amazing autopilot actually reacts to the sea to hold your course. Even when the boat is pitching and rolling, you can remain confident that the Reactor 40 autopilot will keep you on your desired course. Minimal Commissioning and CalibrationAll autopilots require commissioning and calibration — all of them. We know you just want to get on the water, so we made this