Thanks for reply Carl. So if I, by trial and error, install HS210 on the "power" side instead of the "load" side, then I can operate the lights with the manual switch as well, correct? I won't have...

I have a hallway with a 3-way switch at each end of the hallway. I purchased HS210 to replace the conventional 3-way switches. I plan to replace just one of the 3-way switch with HS210 as I want to...