Important: Please ensure your steering shaft is 3/4 inch tapered, as shown in the image above! iHoy Captain Autopilot is a user-friendly autopilot system that can be easily controlled via your mobile devices (compatible with both iOS and Android). It features a simple installation process and can be removed without leaving any trace. Compatible with both cable and hydraulic steering systems, this device offers practical and safe use on boats. It operates using a 12V DC cigarette lighter socket connection and features automatic calibration for quick setup. With Bluetooth 5 technology, it offers a range of up to 30 meters. The dual-screen mode allows both horizontal and vertical use. Ideal for Class C and D boats, this product supports multiple users—any authorized user can operate the device through the iHoy Captain app. iHoy Electronic Systems and Software Inc is a member of NMEA.