Power on the transmitter, the indicator of 2.4G transmitter will twinkle for 3 seconds, which indicates that transmitter is sending code binding information. After 3 seconds, the twinkling 2.4G transmitter indicator becomes solid,?Then connect the receiver or 4in 1 mix controller, observe the receiver or 4 in 1 mix controller, 2.4G transmitter indicator twinkles two times and gets solid, which indicates that the reception of the channel data is successful and are ready to fly.
Turn on the transmitter and power on the helicopter. LED indicator of receiver or 4 in 1 mix controller go out after twinkling two times, indicating that binding is failing and need to unbind firstly and rebind.
1.How to unbind?
Turn off the transmitter，Connecting the battery to receiver, Press the bind keystoke for 1 or 2 seconds LED indicator of Receiver will twinkle constantly, which indicates that unbinding has completed.(As shown in the right picture)
2.Rebind
Firstly disconnect the receiver and 4 in 1 mix controller, then connect the receiver or 4 in 1 mix controller　to the power，the state indicator twinkles slowly, which indicates that receiver is receiving signal. Then Power on the transmitter，if the indicator of RX display from slow twinkling to rapid twinkling, then solid, which indicate the binding is successful.(Note: transmitter just will transmit code in first 3　seconds, if receiver can not receive code within 3 seconds, please turn on the transmitter again.)