@Carl 

It looks like the Tapo S515 was released.  That is a single switch non-dimmer.

So, back to the original question:

Is there any update for a new product for at least a 4-way dimmer switch?  The 3-way works great; however, I had to remove the 4-way switch from my setup and replace with a blank switch cover.

  @Carl I also need a 4-way dimmer switch for my setup. I hope tplink will release one soon.

  @Carl 

Inovelli seems to claim that they can do this? The wiring schematics are scary amateurish, but I'm tempted to give them a try- am I missing something? I'm definitely not loving the documentation either way tho...

'Smart Dimmer (formerly known as the 2-1 Switch)'

The forum won't let me post links, but their 'white' series is the Matter version, and if you find the product page there's a section titled 'PRODUCT DETAILS' which has a 'Documents' section with links to their schematics.

Looks like you can do it with 3 of the dimmers (expensive, don't know why you'd do it this way) or 1 dimmer and 2 'Aux' switches- more reasonable cost.

It also seems to imply that you can use a ordinary 4-way switch with a 3-way switch, replacing only one of the 3-way switches, but I'm not sure how that would work- maybe the switches just restore power to smart dimmer and it goes back to it's prior setting?

Thanks in advance for any thoughts :-)

  @Carl 

I was just told by tapo tech support that I could use the S515 3 way switch with a 4 way circuit, but only by using a single smart switch with 2 mechanical switches.

https://static.tp-link.com/upload/manual/2024/202407/20240715/7106511303_Tapo%20S515(US)1.6_QIG_V1.pdf

I also don't see that the Satellite Switches are available separately. I'm tempted to get two of these:

https://www.tapo.com/us/product/smart-switch/tapo-s515d-kit/v1/#tapo-product-spec

And use the extra "master" as a standalone switch on a single-pole bedroom circuit, with only a single existing switch.

Can you confirm that I can use a single "master" + 2 "satellite" switches on a 4 way circuit?

-ms

  @mshulman In the document

https://static.tp-link.com/upload/manual/2024/202407/20240715/7106511303_Tapo%20S515(US)1.6_QIG_V1.pdf

I see:

Q1: Can I connect two Tapo smart light switches to my 3-way or 4-way circuit?

A: Tapo smart light switch can only work with traditional 3-way or 4-way switches. Do Not use two Tapo smart switches together for 3-way or 4-way connection.

Is this still correct?

Hi All,

I believe the diagram is for a S515, not S515D that is the dimmer switch.

Tapo - Has there been any update on a 4-way dimmer switch?

Thank you.