@Tikitu 

Two smart switch models that don't require a neutral wire are available at the moment, Tapo S210 and Tapo S220, but they're not the dimmer type. Stay tuned on TP-Link's official website for new product releases!

All Tapo devices supports Smart Action for building automation system. Keep in mind that capabilities varies among different products. Refer to this article for detailed information. How to create Smart Action (automation or a shortcut) of my Tapo devices

Additionally, there's a significant upgrade planned for the Smart Action feature in the near future. Subscribe to this post for more details. 

Smart Action 2.0: Unlock Next-Level Smart Home Automation