Binding
To bind the NOVALINK radio system, there are multiple ways to do this:
Transmitter Module:
Press the Bind/DFU button while powered on for ~4 seconds or until the Ethernet Port LEDs start an alternating blinking pattern.
Enter bind mode with ‘bind’ CLI command.
Enter bind mode with LUA script.

Receiver:
Press the Bind/DFU button while powered on for ~4 seconds or until the LEDs start an alternating blinking pattern.
Power cycle the receiver quickly 3 times (wait for power LED to blink 3 times). Upon 4th power-up, the receiver will enter bind mode.

For more details, please visit the mLRS Official Documentation