How do I get in the door

Hint 1 of 4:

Enter the code from the Data storage on left side of Northern Airlock.

Hint 2 of 4:

Press buttons (starting at top) in the code order (R=Right, L=Left)

Hint 3 of 4:

Press red or blue button and corresponding light turns red.

Hint 4 of 4:

Go down to exit buttons and get back to door.