Disconnect the light and battery pack.
Press and hold both buttons on the remote for 2-3 seconds till a faint blink becomes visible on the buttons.
Connect the light and battery pack and quickly press the front light control button on the remote. The light should flash 3 times indicating successful pairing.
The 2.4g remote is compatible with MJ-902, 906 and 908 while the Bluetooth remote is compatible with MJ-900B 902B and 906B.