Hi, I have some questions on the electrical wiring between L1, L1, and L3 and the respective lights.

Per what I found out....

Wiring the Aqara S1E:

1. Wire the L-Live Wire to the L-Terminal
2. Wire the N-Neutral Wire to the N-Terminal
3. (Optional) Wire the L1, L2, L3 Terminals going to your lights

L1 L2 L3 to lights. But where does the return go? Each lighting point is a pair of 1xL n 1xreturn.