Easy connection. Requires power.
I used it for blinds. It has a setting to not operate simultaneously

The well-known Sonoff switch for two channels. It works properly.
Indeed, the buttons are square-shaped, just like in the picture (there are many versions available in terms of aesthetics)

Attention, a neutral wire is needed to operate. Most switches do not have one, so check before ordering.
The mechanism is not compatible with European standard electrical boxes, so it cannot be installed without a patent... Double-sided tape can help here.
The WiFi should be on 2.4 ONLY. If your router also broadcasts on 5 GHz, you're out of luck.
Finally, if you want to connect with third-party apps for remote control, etc., you will have to pay an extra annual subscription. I can handle all the previous issues... but I find this unacceptable!
My suggestion... Choose something more honest.

Attention is needed, but it is very easy to set up. It works perfectly with Alexa and with the application, of course. I didn't have any disconnections. Good product and at a good price.

Attention requires the existence of a neutral in the switch box, something that is not common in households. The only way for it to work is to pull the neutral if you are lucky like me and there is a socket below or nearby. Secondly, after overcoming the hurdle of the neutral... You will discover that the switch does not work with household routers that play by default on 2.4 and 5 GHz. So you will have to log in to your router's admin page and leave only the 2.4 active, after which it will connect immediately and without any problem. Finally, the switch does not attach to a European box traditionally with screw ears, but it only has screws, so you will have to come up with a solution with the ears and screws of the switch that you removed from its position... A lot of searching on YouTube and literally 3 hours later it worked. The application is user-friendly and works with both Google and Apple. The timer does not lose a second