@MarkoMo 

Tapo does not have a three-way smart switch so far. 

Although there isn’t a three-way switch, there is a workaround that allows you to achieve three-way, four-way, or even more control points for the same light/switch using a single pole switch. If you're interested, you might consider this configuration.

It's quite simple. What you need is a Tapo smart button, the S200B or S200D. By creating automation between the smart button and the Tapo smart switch, you can control the smart switch when pressing the smart button, despite there isn't actual wiring between them. One smart button supports four control methods: single click, double click, clockwise rotation, and counterclockwise rotation, providing more control possibilities with just one smart button.

How to create Smart Action (Automation or Shortcut) on Tapo app

For example:

1. Automation One: When (Trigger) Single tap Tapo S200B, Then (Action) turn on/off (depending on its current status) Tapo S500 switch

2. Automation Two: When (Trigger) double tap Tapo S200B, Then (Action) turn off Tapo S500 switch

3. Automation Three: When (Trigger) rotate Tapo S200B clockwise, Then (Action) turn off Living room lighting (it can include one or multiple Tapo smart plugs/bulbs/switches).