"Annotated Woa There's airlock Macrochip schematic with some labels.

Inputs:

1: Clear? - Do I need to clear hazards (e.g. water) out of the airlock? (wire this to sensor outputs)
2: Open? - Should I try toggling the Inner v. Outer doors? (wire this to button outputs)

Outputs:

5: Open Inner! - Inner door should be open. (wire this to inner door inputs)
6: Open Outer! - Outer door should be open. (wire this to outer door inputs)
7: Clear! - Clear any hazards preventing safe opening of the inner door. (wire this to e.g. drains)"