It takes relatively long to update the temperature display (I have an old phone), but in my case, it didn't cause any problems (checking the electric valve between the boiler and the solar panel). It requires a short cable as possible for the sensor and not to be exposed to weather conditions. Someone who knows electronics can make it work without any of the mentioned issues. In any case, if you know what you're asking for and what it can do, it will be helpful and, like in my case, save you money

I bought it 4 months ago, I have placed it on the rooftop in its solar box along with a relay, it works perfectly, despite the occasional disconnections that I consider to be due to poor wifi, it functions flawlessly otherwise.

Very good wifi switch, I installed it on my water heater to control it remotely. I also added a temperature sensor to it

I use it as a radiator thermostat. It simply does what you ask. Unfortunately, the temperature change does not renew quickly.

Fair, easy installation and synchronization.
I have installed it on my gas boiler and it works perfectly for about a month now.

I was disappointed with its reliability and programming capabilities. Firstly, it takes a long time for the temperature to update, making it unreliable for a water heater, for example. Additionally, its temperature-based programming is very poor.

Stable value for a while now....A note so that you don't struggle if you flash it with Tasmota, If you connect the AM2301 sensor, it might give you a problem and not show temperature indications, etc. Before returning the sensors, try setting the Si7021 as the sensor in the settings and maybe the problem will be solved. Also, often the hole for the relay is too small for the sensor plug to fit. Enlarge the hole a bit

Use in solar water heater, as long as it works without sticking, it is very good but here, after 5 months of use, it sticks once a month, resulting in raising the temperature to 120-130 degrees and melting the tubing and throwing it out of the record. They sent me another one in case it had a problem, but it does the same thing. Not for absolute trust, you have to enter the application and check it.

Easy installation with many possibilities for easy programming through the application. The downside in my case is that suddenly, after 4 months of trouble-free operation, the sensor stopped working. I had placed it in the sunlight. I changed the wiring but nothing. That's why I give the product a 3, although I would risk buying it again because I was probably an exception.

I have installed it in almost all of my outdoor lights. It is flawless and easy to use. You may encounter minor issues if the wifi is far away, but once it is connected, it is ready to go.

No problem has occurred after installation on the heating system. I also purchased the sensor to have an indication of the room temperature. The eWelink application works perfectly, as well as its management through Alexa. I have been using the switches for 4 years without any issues. Just be careful with the polarity and stability of the contacts in the connection.

I have had it for 4 years... It hasn't had any issues, not even the underwater temperature sensor. The connection is quite far-reaching... and the measurements are very accurate. I highly recommend it

No problem has occurred after the installation of the solar panel. I also purchased the sensor to have an indication of the water temperature. The application works perfectly, as well as the management through mobile with wifi/4g.

Until now, it seems to work well. I have placed it inside the cabinet and it captures the signal well. It responds immediately to commands from the mobile.

Very good, it does exactly what it describes in the instructions. Just be careful with the connection and then no problem!

I will wait to see how long it will work.
The previous one burned out in 2 months. However, as a design, it is good and convenient. It solves your hands.

It works great so far. There are no instructions but they are available online. It works exactly as advertised. Easy device. Works automatically from anywhere.

I have been using it for 20 days and it works perfectly whether I am in Athens or at my country house, there is no problem at all, amazing switch with awesome features