Ive been trying to setup the HS210 replacing only 1 of the dumb switches with an HS210. Ive seen many success reports about this an the TP link app seems to support it as well.
So I've been trying to install an HS210 3 way switch. I'm replacing only one of my dumb switches. However when I hook it up like in the drawing , the tplink switch powers on but pressing it didn't turn the light on. I hear the relay in the switch clicking however.
If I turn the dumb switch on it turns on the lights but kills power to the tplink switch.
I've updated the tplink switch firmware to the latest and set it up in the app .
I've also tried to swap the red and black wires shown in the diagram but that did not help.
The original dumb switch configuration behaved as though both switches could control the light (no master/slave)