@Riley_S I've bought s505 and s505d the smart hub and smart button. I'm trying to make my kitchen can lights - 12 led down lights all on the same circuit - dimmable. This circuit is two way. With two separate single pole dumb switches currently controlling the lights. I've tried replacing both dumb switches with the s505 and s505d on both ends. I've tried a combination with one switch being the s505 and the other being the s505d. Still no joy. Is this even possible to make work? What am I getting wrong? 

  @Mattpez 

I haven't seen a situation where two single pole switches control the same lights, or light run.  Can you provide a picture of the wiring of those swtichboxes?

  @Carl I mean the set up currently is with 2 Single Pole Double Throw or SPDT switches. They control twelve LED can lights in my kitchen ceiling. Is there a set up utilizing the Tapo s505d or the s505 or the smart button with hub to replace the dumb SPDT switches?

  @Mattpez 

I apologize I am not an electrician by trade.  I am not extremely familiar with the terminology double throw.  If my Google Search skills are on point I assume you are referring to a switch that has Center as off and On is either up or down.  Is that correct?   If so that no we do not currently have any products that support such a feature.  The closest thing right now would be the upcoming Tapo P135 which is a dual 2-prong outlet smart plug that is controlled through a smart dimmer. But right now we do not have any double throw compatible products in the planned line up.  I will push this request up though.