NAC-1 Precision Hydraulic Autopilot pack: Easy to install. Includes Precision-9 Heading Sensor, NAC-1 Autopilot Computer, PUMP-1 (MKII) high efficiency, super-quiet 0.8L hydraulic gear reversible pump , Standby-Auto button and Micro-C network components. Hydraulic connectors and hoses included. Dash-mount button for one-touch Auto/Standby activationSteer to Heading, Course or RouteAutomatic Turn PattersNAC-1 Plug & Socket connectors reduce the installation time