Very reliable, very easy installation with minimal electrical knowledge. The only thing is that it is not SO small to fit in a switch box, but it was comfortable in the outdoor junction box that I used

As I have mentioned, all Sonoff products are very reliable. I have been using them for years and they work flawlessly, just like the eWeLink application, which performs excellently

A regular sonoff in a very small size. Controlled by the official sonoff application. However, it can also be put in DIY mode so that it can be controlled through REST API.

Quite good. You put Tasmota on it to work if you want to connect it to a smart home application (HA, Domoticz, etc.) and there your horizons really open up.

+ Good Wifi
+ Easy installation (don't play with electricity if you don't know)
+ Easily pass another operating system
+ Quite cheap

- It is square and does not fit easily into the box
- It withstands up to 10 Amps, so be careful what you put in it.
- There is a better one with a few more money (we are not advertising....)

You don't replace the existing electrical switches. They are transformed into smart ones with relatively little money.

I got one for testing and later I brought some from China, but for ten and 70 euros I have almost all the garden lights and some from the house controlled by my mobile phone at the same time with the house switches. So easy, so cheap, so reliable when others ask for the same things for at least a thousand euros. I have programmed all the lights in my garden and after installing motors on the awnings, I have also put them there and every afternoon they go up on their own. I think it can be applied to anything that works with electricity and most importantly, it supports the Greek language

Awesome! It barely fits in the box. It can only handle one switch, if it's double, only one line. It works with ALEXA and GOOGLE but it needs a neutral to work!

It does not fit in most boxes.
If there are more than 3 cables running through the box, it does not fit no matter how big it is.

For a three-way connection with the common method of connection in existing connections, it is not possible to support it.

Fantastic. It fits in the power outlet's boat and you can work wonders.
Attention! It needs a neutral to work

I have it for 1 day and it works perfectly. I have no problem at all.
Edit: After 1 year, I had to change the Wi-Fi. I reset it and that was it. It couldn't connect to the app again. It's definitely not the device's fault because I have 3 and I can't connect with any of them through the app.