I used an Ewelink Wall Switch. It was easy to install, requires a neutral wire. It was pretty inexpensive 24 on Amazon. It works perfectly with Alexa, and echo dot. The instruction that comes with it, are ok, but follow the instructions given on the ewelink App. to get it to register. I have had mine for about 3 weeks now and have had no problems. I have verified that it worked remotely, so all is good. I am going to purchase a few more. Also, I don't believe you will find a set of smart switches to use in a 3 way configuration. This last statement may have been wrong. I just found a 3 way switch configuration. It is a Leviton DW6HD and DD00R-DLC this would replace the two manual switches that control one light. I am going to try this soon. It does not require a Hub. I will post when I do and get it configured.