2.4GHz Transmitter, 2-Channel V4
V4 ESC/Receiver WILL ONLY WORK WITH V4 TRANSMITTERS
https://www.horizonhobby.com/pdf/ECX%20Radio%20Conversion%20Guide.pdf
V4 ESC/Receiver WILL ONLY WORK WITH V4 TRANSMITTERS
https://www.horizonhobby.com/pdf/ECX%20Radio%20Conversion%20Guide.pdf