It worked just fine.
As for the range, it opens the garage door from the 5th floor.
It did not synchronize with the instructions written. I followed the YouTube instructions, as described in the comment by Gewrgios13.
For synchronization:
Press A and B simultaneously on the new remote, and then without releasing A, press B 3 times slowly.
Then place the old and new remotes back to back and press at the same time the button on the old remote and the button on the new remote that you want to synchronize, for a few seconds until the light stays steady. Repeat for all the buttons you want to synchronize.
Finally, press the C and D buttons simultaneously.

https://www.youtube.com/watch?v=aBWZFyUlTro

https://www.youtube.com/watch?v=3asofee3gyg

unacceptable after great difficulty I managed to synchronize the second garage door ... after 1 month it reset by itself I synchronized one garage door, the second one not at all... just unacceptable....

I was never able to program it even though I followed the instructions. It remains in its packaging without me being able to do anything.

So, like others, I tried to set it up with the instructions it comes with, nothing, I tried with some help from comments, nothing, finally the video that a friend posted on YT for another remote works for this one too! I quote:

button A/1 https://www.youtube.com/watch?v=aBWZFyUlTro
buttons B, C, D/2,3,4 https://www.youtube.com/watch?v=3asofee3gyg

***ATTENTION DURING TRANSMISSION YOU MUST TOUCH THEM EXACTLY AS IN THE VIDEO BACK TO BACK!!!

*** SOMEONE SAYS IT'S FOR 433 EXACTLY, THAT'S NOT TRUE AT LEAST FOR THE ONE I GOT, THE BOX SAYS 433 MHZ AND I TRANSFERRED FROM A REMOTE THAT SAYS 433.92MHZ ON IT

It only works for specific fixed code remotes at 433MHz. If you find yours, you are lucky. I got a couple of different ones to get it right.

I bought three of these remote controls, I tried with all three to transmit the frequency, none of them worked, I thought maybe I was doing something wrong, I searched on YouTube to see if I could find a video showing how to do it correctly, but in the end I did everything right, it's not rocket science - even though I tried again 10 times the frequency was not transmitted in any of the three and now they are useless to me and wasted money!

Besides that, the writing on the product packaging that explains the process is so small that you need a magnifying glass to read the letters, which are in Italian and only Italian - luckily I knew from another product how the transmission works which didn't succeed here in any of the three!

There is someone who was having a problem with the reset of the remote control. No matter how many videos I watched, no matter how many ways I tried to reset it, it doesn't work. I haven't even reached the programming stage

For the money (3€) very value for money. I have programmed codes from 4 garage doors. WARNING! It is only for frequency 433Mhz exactly! And of course only fixed codes. Programming is super easy.

It can't be programmed with anything..... instead of user instructions that weren't in the package, they sent me videos from YT.....

The remote control comes with the codes already activated.
You must first delete them and then clone it.
There are many videos on Youtube for this procedure.

For its price, it is very good. For the setup, initially to delete any settings it has, hold down buttons A and B for 3-4 seconds. Then bring the remote control close to what you want to copy (at a distance of 1 centimeter). To save the code on button A: Press and hold down button A and the button of the remote control you want to copy at the same time (for 3-4 seconds).
Follow the same process if you want to set a code on buttons B, C, and D

Together, hold A and B to revive 3 times and then hold A and press B 3 times.
Note that the controller is ready to copy only when you press and the buttons do not light up

A small flaw that could be considered a flaw is that sometimes it gets out of sync because I don't use it often. Other than that, it is very good and user-friendly

Unfortunately, it doesn't work at all, and with all the alternative adjustment methods I found on the Internet! The original is 433.92. Maybe that's why it can't be adjusted.

The copy was not made from another remote control. The lights indicate that it has been programmed, but ultimately it does not give the command.

Small, convenient to have on your keys and with very good range. The synchronization instructions are simply unacceptable, luckily there is YouTube and I managed to make it work!

I just received and set up the aforementioned remote control. It is indeed compatible only with a frequency of 433MHz.
As for the code copying setup, follow the steps below to make it easier. Press the two large buttons 1 and 2 simultaneously. At first, the LED does not light up, but after a couple of seconds, it blinks a few times, indicating that it is entering the reset process. Then, select any of the buttons you want from 1, 2, 3, or 4, and press it steadily and simultaneously (be careful, simultaneously) with the button of the remote control you want to copy. At first, it blinks three times, and then, once it blinks rapidly, it is ready. You can then proceed to adjust the other buttons of the remote control in order. Good luck. I hope it is durable and does not lose its frequency. We will see with use.
After daily use, I have to say that the remote control is excellent up to today, 30/6/21.
I am coming back and informing you that up to today, 16/1/22, it is flawless.

If I could give it a -10, I would.
They sent me the same thing twice because I told them it wasn't working, and both had the exact same problem:
When you delete the code to enter the code of your existing remote control, it doesn't work to save it.
Luckily, I got my money back.
Stay away from all remote controls that cost less than 15€. It has nothing to do with the store.

It doesn't work, I took it to two technicians and it wouldn't sync! At least they gave me a refund

Attention, it only works for remote controls with a frequency of exactly 433mhz, something that is not mentioned on the website. That means if your remote controls are 433.10- 433.92, it will not work.

It works well...only that the instructions are in Portuguese...the instructions in the description are wrong...press the two large buttons together for 3 seconds and then press the second large button three times. Then simultaneously press both remote controls