CNC aluminum alloy shell provides effective protection and heat dissipation coolingBuilt-in black box with large capacity 128Mb flash memorySupports CRSF, DSM, S.BUS, UART interface and provides a variety of rich interfaces for function expansionSmall size, wide range of uses, suitable for 250-700 helicoptersPlug and play without welding, perfectly compatible with RP3-H EXPRESSLRS receiverProduct: Helicopter GyroFirmware: Rotorflight 2.0MCU: STM32F722RET6Gyro (IMU): ICM-42688-PFlash memory (black box.IC): 128Mb (W25N01GVZEIG)Barometer: SP06-001UART interface: 6 - DSM[1], S.BUS[UART2], A-CRSF[UART4], PORT-B[UART6], PORT-C[UART3]Servos: 4-S1,S2,S3, tail rudderRPM sensor: 1-from ESC speed sensorSBUS: 1Supported receivers: CRSF, ELRS, GHOST, S.BUS, SUMD, IBUS, XBUS, EXBUS, PPM, MSP, DSM2, DSMXVoltage (DC): 5 - 12.6VA-B-C serial port power output: 5V - 2.0ADSM serial port power output: 3.3V - 0.5ATelemetry: S.BUS, HoTT, S.Port, MSP, EDGETX, ELRSESC: PWM, Oneshot, Multishot, DshotSupport tail servo: 760μs/1520μs servoSupport tail motor drive: YesColour:BlackMaterial:CNC Aluminum AlloyPackage contents:1x Helicopter Gyro1x USB-C Extension Cable1x Servo Cable (Dupont 3-Pin Connector)3x 4P Cable1x Type-C Extension Cable2x Heat Shrink Tubing3x Double-Sided Mounting TapeOnly 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.