L
N
L
L1
S0 S1
Diagram 1
Method 2: L1 is connected to the load wire. One end of the external switch is
connected to S0, and the other end is connected to the live wire. L is connected to
the live wire(Diagram 2). If the external switch is a dual-control switch, the end of
the original switch, which is connected to the load wire, can be connected to S0 to
realize an external dual control (Diagram 3).
04