2.5cm Accuracy: Correction sources by RTK Base R26 or CORS give the JY305 autosteering system an accuracy of 2.5 cm. Please purchase the JY305+R26 RTK base bundle if you do not have CORS. Otherwise, it operates in PPP mode with an accuracy of 10 cm and above. There is no need for additional networks subscriptions or charges when using R26 RTK BASE or PPP Necessary Parts: 1)Included extra and built-in gyroscope: Single or double gyro mode both work with the JY305 gps system for tractor 2) Included type A spline with 36 teeth and a diameter of 21.3-21.7 mm, which is compatible for New Holland and John Deere. Free additional spline from SMAJAYU is available to fit kinds of brand tractor Software and Support: 1)multiple language:English,Spanish,French...Multiple constellations and frequencies. Farm measurement and farm management supported. The field size,speed can be seen on the display. Import A-B line supported 2) Installation manual,video Training and remote diagnosis are supported Package Inclusions: 10-inch waterproof tablet with a high-precision GNSS board, a high-torque auto steering motor with an integrated controller,a high-precision GNSS GPS receiver, a extra gyroscope and additional cables and tools. Weight:20kg/set, Size: 67.5*48.5*26.8cm/set Working Instructions and Uses: On a farm, this tractor auto steering system can steering on its own which reduces labor investment, increases farmer productivity and makes farming more intelligent for sowing, cultivating, trenching, ridging, spraying, transplanting, consolidating land, harvesting, and other tasks. It can be used with a wide range of tractors, harvesting equipment, rice transplanters, plant protection equipment, and other agricultural implement The JY305 GNSS Auto-Steering System, an ideal solution for precision agriculture that features a high-torque motor to control the steering wheel. It integrates the advantages of convenient installation, large torque, high precision, low heat, and quick debugging, making it suitable for various applications including tractors, harvesting machines, plant protection machinery, rice transplanters, and other agricultural models. The system comprises a control tablet with a built-in 4G modem, a steering wheel motor with an integrated controller, and an angle sensor, enabling its wide use in scenarios like sowing, cultivating, trenching, ridging, pesticide spraying, transplanting, land consolidation, and harvesting. It supports multiple constellations and frequencies, including GPS L1, L2, GLONASS L1, L2, BeiDou B1, B2, GALILEO E1, E5b, QZSS L1, L2, and SBAS L1. With a small high-torque motor, a highly integrated design, a 10.1” touch screen control tablet, positioning accuracy up to 2.5 cm, no need for hydraulic system modification, fast installation in 30 minutes, and calibration in just 15 minutes, the JY305 GNSS Auto-Steering System is built to enhance your agricultural operations with efficiency and precision, making it a valuable addition for farmers looking to optimize their fieldwork.