@Emon.I 

The HS220 is not designed to work with a three way setting so replacing one of the three way outlets will not work. It would be best to consult a trained individual (electrician) for advice.

@Tony you guys really need to get on a dimmable 3way. It's super disappointing that I need to go to a different brand to get that feature. I'd like to have my house unified. A lot of threads about this and a huge gap in the product line.

@Emon.I  Goodbye TP Link.  I have many of your smart plugs in my home.  I prefer to use your smart wall switches for consistency.  Unfortunately, I'm forced to go with a competitor since you don't offer a dimmable 3-way wall switch.  I certainly don't want single pole TP Link switches and a different brand for my 3-way switches.  I want all of them to be the same brand with one app. You've failed to meet my needs...one of many customers wanting this product.  Farewell!

@Starfish1 

Starfish1 wrote

@Emon.I  Goodbye TP Link.  I have many of your smart plugs in my home.  I prefer to use your smart wall switches for consistency.  Unfortunately, I'm forced to go with a competitor since you don't offer a dimmable 3-way wall switch.  I certainly don't want single pole TP Link switches and a different brand for my 3-way switches.  I want all of them to be the same brand with one app. You've failed to meet my needs...one of many customers wanting this product.  Farewell!

What 3-way dimmer switch brand did you eventually go with?