Maretron's SSC300 Rate Gyro Compass is a solid state, rate gyro electronic compass that provides better than 1° heading accuracy through ±45° of roll and pitch angle, and better than 1° roll and pitch accuracy in static conditions. Each SSC300 is factory calibrated for maximum accuracy. It delivers precise, reliable heading information ten times per second, plus vessel attitude including pitch and roll readings once per second. A micromachined rate gyro is used by advanced stabilization algorithms to provide accurate, stable readings during dynamically changing conditions such as hard turns or rough seas, making it an ideal heading sensor for autopilot applications.• Dimensions: 4.46" x 3.23" x 2.14" Including Mounting Flanges 113mm x 82mm x 54mm • Weight: 7 oz. (198 g)• Operating Voltage: 9 to 16 Volts• Reverse Battery Protection: Yes• Load Dump Protection: Yes 3.23 Inch Length x 3.23 Inch Width x 2.14 Inch Height Overall Dimension 50 Milliampere Power Consumption; 9 To 16 Volt DC Operating Voltage With 2 Mounting Brackets, 4 Mounting Bracket Screws, 4 Mounting Screws, User Manual | Maretron Solid State Compass