The SI-TEX SP-120C brings together hydraulic, mechanical, and solenoid steering control in a single compact autopilot built for vessels under 38 feet. No separate junction box is needed — all connections route directly to the control head. A high-performance 9-axis rate gyro compass delivers precise steering response, while GPS SOG and COG inputs sharpen overall performance. The 4.1" x 4.1" splash-proof control head features a color LCD that simultaneously shows actual compass heading, selected heading, and rudder angle. Four steering modes cover everyday autopilot use through GPS waypoint and route following, and the system works in Virtual Rudder Feedback mode for outboards or accepts an optional separate rudder feedback unit for inboard installations.

Specifications:

• Waterproof rating: IPX6
• Control head dimensions: 110 mm L x 110 mm W (4.1" x 4.1")
• Supply voltage: 12/24 V DC
• Display: Color LCD showing compass heading, selected heading, and rudder angle simultaneously
• Steering compatibility: Hydraulic steering, mechanical steering, and solenoid control
• Vessel size: Ideal for small vessels under 38 feet
• Rudder feedback: Virtual Rudder Feedback mode (outboards) or optional separate rudder feedback unit (inboards)
• Compass: 9-axis electronic rate gyro compass
• GPS interface: NMEA-0183 input accepts COG and SOG from most chartplotters for waypoint and route steering
• NMEA-0183 output: 10 kHz compass heading output for MFD chart/radar overlay
• Steering modes: Manual (Power Steer), Auto (maintains selected magnetic course), GPS (waypoint/route), Wind (sailboat wind sensor interface)
• Standby current consumption: 0.5 A at 12 V DC
• Maximum drive output current: 15 A
• Course detection accuracy: <1 degree
• Operating temperature: -10°C to +55°C
• No separate junction box required — all connections made at the control head
• Warranty: 2-year SI-TEX 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