The is comprised of the high-current NAC-2 autopilot computer, Precision-9 compass and RF-25 rudder feedback unit ideal for smaller vessels, designed to run small hydraulic drives and mechanical drives for vessels up to 10M (33') in length. The NAC-2 Autopilot Computer is the brains behind your autopilot system. NAC-2 contains the control algorithms developed to helm a yacht across a broad range of weather conditions and sea-states, alongside the electronics needed to operate a hydraulic or mechanical drive unit, while also interfacing with other components including heading sensors and rudder feedback units. The NAC-2 was designed for boats up to 10M (33') in length and is suitable for low-current hydraulic drives, mechanical drives, or solenoid valves with a current rating of 8 Amps continuous (12 Amps peak).Precision-9 CompassThe Precision-9 Compass. Outputs Heading (20 hZ), Rate Of Turn (20 hZ), roll, and pitch (10 hZ) over the NMEA 2000 network. RF25N NMEA2000RF25N, Rudder Feedback Unit: With transmission link and 5M (16.5') NMEA2000 Micro-C cableN2k Backbone Starter KitNMEA 2000 Micro-C Network starter kit: Includes Network power cable, 4.5M (15') N2K cable, 3 x T-connectors, 2 x network terminatorsSpecifications:• Operating temperature: -25°C to +55°C (13°F to 131°F)• Protection: Splashproof, IPx5• Weight: 0.6 kg (1.3 lbs)• Overall Dimensions: Width: 7.1" 180mm / Height: 2.2" 57mm• Power supply: 9-31.2 V DC• Load: 140 mA + drive unit load• Performance: Drive: 8 A cont., 16A for 1s• Network: 1xMicroC (NMEA2000)• Feedback: Variable voltage/resistive 0-5V• Drive output: To PUMP-1 or HELM-1• Power supply: 9-31.2 V DC• Solenoid: 12/24V DC, common, load range 10mA to 10A, off current | NAC-2 Autopilot Core Pack - NAC-2, Precision-9, RF25N & N2k Starter Kit