Shelly 1 Mini Gen3

Well engineered, great interface

Very easy install and configuration, app and web interface easy to use. I like that the device has a built in web server, so not dependent on any ecosystem. I installed mine on the heater relay control board on my hot tub to inhibit heating during peak $$ hours.

Works great, replacing a product 10 times it's size.

I have about a dozen of these and they are the only units I use for switching. Reliable and easy to integrate with Home Assistant. Highly recommended.