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Please read the readme.txt included in the ZIP
The M2 2020 is a high-quality product created by the OMPHOBBY R&D team for helicopter enthusiasts. Its compact size is suitable for indoor flexible flight an,d outdoor violent flight.
The dual ESCs are improved using high quality MOSFETs with lower internal resistance, enhancing the flight characteristics even further. The built-in official receiver supports s-bus and DSM/S satellites.
The flight controller has thress built-in flight modes: stabilizing attitude, soft 3D and violet 3D. While in 3D mode, you can quickly switch to attitude mode. The flight controller also has fulley adjustable parameters including gyro sensitivity, rates, gain and servo mid-point position/collective.
Some content in menu 2.