The SI-TEX SP-120C brings full-color autopilot control to small vessels under 38 feet, supporting hydraulic, mechanical, and solenoid steering systems. Designed for 1983–93 Mercury I/O and Volvo Diesel applications, this package pairs the SP-120C control head with a Remote Feedback unit (RFB) and a remote mechanical drive. A high-performance 9-axis rate gyro compass delivers precise steering response, while NMEA-0183 GPS integration enables waypoint and route steering from most chartplotters. No separate junction box is needed — all connections route directly to the rear of the compact, splash-proof control head.

Specifications:

• Waterproof rating: IPX6
• Control head dimensions: 110 mm L x 110 mm W (4.1" x 4.1")
• Voltage supply: 12/24 V DC
• Display: Color LCD showing actual compass heading, selected heading, and rudder angle simultaneously
• Standby current consumption: 0.5 A at 12 V DC
• Maximum drive output current: 15 A
• Operating temperature: -10°C to +55°C
• Compass: 9-axis electronic rate gyro, course detection <1 degree
• Data connections: NMEA-0183 GPS input; NMEA-0183 10 kHz compass heading output for MFD chart/radar overlay
• GPS input uses Speed Over Ground (SOG) and Course Over Ground (COG) to enhance steering performance
• Steering modes: Manual (Power Steer), Auto (maintains selected magnetic course), GPS (waypoint/route steering), Wind (interfaces with wind sensor for sailboat use)
• Virtual Rudder Feedback mode available for outboard vessels; separate rudder feedback unit supported for inboard vessels
• Compatible with: 1983–93 Mercury I/O, Volvo Diesel
• Warranty: 2-year SI-TEX limited warranty

In the Box:

• SI-TEX SP-120C Color LCD Autopilot Control Head
• NMEA interface cables
• 9-axis electronic rate gyro compass
• Control head sun cover
• Product manual
• Mounting screws