@Kevin_Z Hi, I think that my physical connections are OK, because an installed 2 more HS200 in the same way and they are working. I but more photos and videos about my problem for you help me....

@Fabiohcd Why do my LED bulbs flicker on a TP-Link HS200 switch?

I tried to install my smart light switch (HS200) but not work. I did the correct physical instalation but the switch keep swaying. It stay repentindaly turn on/off, and blink the wifi icon (orange...