Installed just one side of a HS210 because the other switch is outside. Both physical switches work fine. They turn the lights on or off. When using the app, I have to get the on/off button twice each time to turn the light on or off. I wouldn't care that much except now scheduling won't work as it needs to run twice, but I'm using sunrise and sunset, so I can't program that.
HS210 install ok, but have to push app button twice to turn on or off