1、Byme-A flight controller of Fixed-Wing vertical mode, applicable to various straight wing aircraft including 3D fixed wing(F3P), 4-channel trainer and scale model aircraft. 2、With the 3-axis gyroscope and 3-axis acceleration sensor and the full attitude algorithm, control algorithm and digital filter combined, Byme-A makes beginners easily achieve professional vertical flight even at first try. 3、No Parameters, Easy Setup: Byme-A is developed with the best PID parameters by experienced pilots and engineers repeatedly studied flight tests for over a year. Pilots only need to pull both joysticks to outside corners to calibrate without specially setting parameters. 4、Compact and Portable: Byme-A is tiny with the total weight of 4.5g including wires. Even small indoor models can have it installed without extra burden for longer flight time 5、Five Professional Modes: Pilots can practice with any of the five flight modes(Vertical/Stabilize/Gyro/Acro/Manual）as wish. Radiolink Byme-A Flight Stabiliser Flight Controller Gyroscope Self-stabilization Balance for RC Airplane Fixed Wing 4CH Trainer 3D Aerobatics Scale F3P. Features: Byme-A flight controller of Fixed-Wing vertical mode, applicable to various straight wing aircraft including 3D fixed wing(F3P), 4-channel trainer and scale model aircraft. With the 3-axis gyroscope and 3-axis acceleration sensor and the full attitude algorithm, control algorithm and digital filter combined, Byme-A makes beginners easily achieve professional vertical flight even at first try. Five Professional Modes: Pilots can practice with any of the five flight modes(Vertical/Stabilize/Gyro/Acro/Manual）as wish. No Parameters, Easy Setup: Byme-A is developed with the best PID parameters by experienced pilots and engineers repeatedly studied flight tests for over a year. Pilots only need to pull both joysticks to outside corners to calibrate without specially setting parameters. Compact and Portable: Byme-A is tiny with the total weight of 4.5g including wires. Even small indoor models can have it installed without extra burden for longer flight time. Specifications: Brand Name: RadioLink Item Name: Byme-A Flight Controller Color: Black Material: Metal Integrated Sensor: 3-axis gyroscope and 3-axis acceleration sensor Input Voltage: 6-12V Channel: 4CH Signal Supported: SBUS/PPM Operating Current: 25±2mA Item Size: 35.5 * 15.5 * 10.5mm Item Weight: 4.5g Package Information: Package size: 5 * 2 * 1.5cm / 2 * 0.8 * 0.6in Package weight: 15g Package List: 1 * Byme-A Flight Controller 1 * Cable and Tape 1 * Byme-A Flight Controller 1 * Cable and Tape