Very expensive device for the functions it provides, especially in our days where the market is flooded with devices with much better prices and functions! As another user said, it often has slow response in opening the screen and sometimes it blocks the functions for opening the door or the camera! It is incompatible with other companies, therefore it is also impractical, when I can find intercoms and doorbells compatible with many other companies and with more functions at half the price!

Clear screen both during the day and at night.
Pleasant sound, feels like you are at an airport, it doesn't have the typical sound that regular intercoms have.

On the negative side,
The screen takes a while to open from the moment someone presses the button, sometimes you have to wait a few seconds if you don't press the screen button.
The control buttons are not illuminated, which is not convenient at all.
Lastly, at least for me, it has a lot of interference in the sound, although it doesn't bother during conversation.

One of the best door phones always for this money. The screen has good clarity, the sound from the bell is good with adjustable volume, and the external camera is good with an automatic lighting sensor on the button when it gets dark. Owner for about 10 months

I have it for 2 years. Reliable, highly functional, and with the ability to add a second screen in the future if you build a floor in your house. Excellent construction, as expected from the brand.