I can't understand exactly what the friend in the other review is describing ?‍♂️
In my case, the device is very fast and accurate and does exactly what it says.

The app is free, the well-known Tuya app, and it has all the indications as normal:
consumption measurement per day, month, and year, graphs, history, and remote monitoring.

I have an apartment that I rent on Airbnb and I can see the consumption in real time from my home.
At the same time, on a second device, I have remote control and I turn the air conditioner on and off (and of course you can do the same for the water heater).

The settings for overvoltage – undervoltage – overcurrent work perfectly and give you real protection for the installation.

I'm also uploading a photo with the measurement for day/month/year, which according to the other person "can't be done"
Well... it can definitely be done. He can send a message so I can show him, although it's obvious as soon as you open the app.

For me, value for money, ideal for homes, vacation houses, and Airbnb. I would buy it again without a second thought.

⚡️

It does what it says, but I wanted to have power energy recording in .csv and I haven't managed to do that, nor did I spend more time on it. The recordings are done with a subscription and I still haven't figured out how I can see previous days. It's like it only makes a graph when you are connected to its app. In the end, it does what it says, but I was misled because I wanted an energy meter and not such a device. And it doesn't always measure correctly, at least in my installation.