What is the L 1, l, n of the power switch? How to connect two lines?

This should be a switch with a socket, where L refers to the live wire, L 1 refers to the control line passing through the switch, and N refers to the zero line.

There are three identification methods:

If one of the two wires is connected to a live wire and the other is connected to a controlled load such as a lamp, then l and L 1 can be connected.

If one of the two wires is the live wire and the other is the neutral wire, it can't be controlled from the outside at this time. The live wire is connected to L, and the neutral wire is connected to N. The socket is often charged and the switch is useless. When the live wire is connected to L 1 and the neutral wire is connected to N, the socket is controlled by the switch.

First, we should distinguish four lines. If one group is the live wire and neutral wire of the power cord and the other group is the zero wire and live wire of the lighting cord, then the connection method is: the live wire of the power cord is connected to the L interface, the two zero wires are connected to the N interface together, and the live wire of the lighting lamp is connected to L 1.

If the other set of power cord connectors are the ground wire and live wire of the lighting lamp, the connections are as follows:

The live wire of the power cord is connected to the L interface of the socket, the neutral wire is connected to the N interface of the socket, the ground wire is connected to the interface marked with the ground wire below, and the live wire of the lighting lamp is connected to the L 1 interface. In addition, if the switch is not connected to the live wire L interface, there should be another interface. If so, you need to find a power cord to connect the interface with the firewire L interface.