Yes, otherwise you are starving the smart switch of the power it needs internally to function when you dim the lights

@Tony I replaced one of the two LED bulbs with a 40 watt incandescent bulb. That made the remaining LED bulb go completely “OFF” when the light is off. Everything works as expected now in all four...

@MotoGPPlus I installed a HS-210 at the end with the HOT lead and a dumb 3-way switch with dimmer at the LOAD end. Works just fine. I have LED bulbs in a fisxture above dinning table. THe HS-210...

@OuterLimit I have the same problem. In my case there is a small leakage current on the traveler that keeps the small LED buld that is being controlled very dimly lit. It seems to be enough current...

I’ve installed over 11 TP-Link WIFI switches in my house so far, including 3 different 3-way switches. For the most part installation has been easy {except for getting the much larger WIFI switch...