CNC aluminum alloy shell provides effective protection and heat dissipation cooling Built-in black box with large capacity 128Mb flash memory Supports CRSF, DSM, S.BUS, UART interface and provides a variety of rich interfaces for function expansion Small size, wide range of uses, suitable for 250-700 helicopters Plug and play without welding, perfectly compatible with RP3-H EXPRESSLRS receiver Product: Helicopter Gyro Firmware: Rotorflight 2.0 MCU: STM32F722RET6 Gyro (IMU): -42688-P Flash memory (black box.IC): 128Mb (W25N01GVZEIG) Barometer: SP06-001 UART interface: 6 - DSM[1], S.BUS[UART2], A-CRSF[UART4], PORT-B[UART6], PORT-C[UART3] Servos: 4-S1,S2,S3, tail rudder RPM sensor: 1-from ESC speed sensor SBUS: 1 Supported receivers: CRSF, ELRS, GHOST, S.BUS, SUMD, IBUS, XBUS, EXBUS, PPM, MSP, DSM2, DSMX Voltage (DC): 5 - 12.6V A-B-C serial port power output: 5V - 2.0A DSM serial port power output: 3.3V - 0.5A Telemetry: S.BUS, , S.Port, MSP, EDGETX, ELRS ESC: PWM, Oneshot, Multishot, Dshot Support tail servo: 760μs/1520μs servo Support tail motor drive: Yes Colour:Black Material:CNC Aluminum Alloy Package contents: 1x Helicopter Gyro 1x USB-C Extension Cable 1x Servo Cable ( 3-Pin Connector) 3x 4P Cable 1x Type-C Extension Cable 2x Heat Shrink Tubing 3x Double-Sided Mounting Tape 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.