Applicable for Multiple Models: Applicable to all model airplanes with mixed elevator and aileron controls including delta wing, paper plane, J10, traditional SU27, and the SU27 with rudder servo, F22. Flight Controller Assist Enhance Stability: Three-axis gyroscope and three-axis acceleration sensor combined with the full attitude algorithm, control algorithm, and digital filter make the airplane with the flight controller Byme-DB easy to change from Modes of Stabilize Mode/Gyro Mode/Manual Mode. Beginners can start with the Stabilize Mode and quickly master it even on the first flight. Three Flight Modes: Stabilize Mode, Gyro Mode, and Manual Mode. Both beginners and professional pilots can enjoy the fun of flight. PID AutoTune: Byme-DB continues to optimize the optimal PID parameters based on Byme-D. The fourth channel output is used for a delta wing with rudders, etc. No need for parameter adjustment. Only the flight control mode switch and flight controller calibration need to be set when the first wiring. Product Name: Byme-DB Flight Controller Dimension: 29X25.1X9.1mm (1.14inch X 0.99inch X 0.36inch) Weight (With wires): 4.5g(0.16oz) Channel Quantity: 4 channels Signal Supported: SBUS/PPM Input Voltage: 5-6V Operating Current: 25±2mA Integrated Sensor: three-axis gyroscope and three-axis acceleration sensor Flight Modes: Stabilize Mode, Gyro Mode, and Manual Mode Channel for Flight Mode Switch: Channel 5 Channel for Throttle Cut: channel 7(requires at least 7 channels transmitter) Models Compatible: Applicable to all model airplanes with mixed elevator/aileron controls including delta wing, paper plane, J10, traditional SU27 and the SU27 with rudder servo, F22 Transmitters Compatible: all the transmitters with SBUS/PPM signal output Socket Specifications: CH1, CH2 and CH4