Applicable for Multiple Models: Applicable to all model airplanes with mixed elevator and aileron controls including 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 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: 252mA 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 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 CH4are 3P SH1.00 sockets; the receiver connect socket is 3P PH1.25 socket; CH3 is a 3P 2.54mm Due to different batches, the appearance, color and printed words of the product , which not affect the use. Colour:White Material:plastic Package Contents: 1 x Flight Controller 1 x Connecting cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.