The configuration is exactly the same except the common is marked L instead of C or Com. to use as a one way switch you should use L (C) and L1. Internally the switch connects the L (C) to either L1 so that with a one way setup it completes the circuit or to L2 (open circuit) off. If you mix up L1 and L2 it just means that the switch will work upside down ie. up on and down off.
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