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It has a "light" button and you would expect the screen to light up, but a weak LED light turns on at the top.
It did not synchronize properly with my air conditioner. While it found compatible codes, the temperature changed by 2 degrees in all of them.

As long as it worked, it was powerful at startup. After a week of the car being idle, it completely discharged and gave up. 50 euros wasted!

It seems reliable, especially if you consider the cost ah/€.
I will come back after a while of use.

Optically sturdy frame, it also has crocodile clips for direct connection to a battery. It loses one star because the crocodile clips have exposed wires.
As for performance, it will be tested and I will come back.

Unfortunately, I will also confirm the rule. In one year of use with a solar panel, it has lost 50% of its power.

They were placed 100 meters apart and transferred 1mbps from the initial speed of 20mbps (without any physical obstacles between them)! Then, in order to determine the problem (whether it is clearly an issue with antennas or environmental noise, etc.), they were placed 5 meters apart and transferred 10mbps from the initial speed of 20mbps!

Ισως η πιο καλη αναλογια τιμης με ποιοτητα. Περιλαμβανει τα παντα με οδηγιες για την τοποθετηση της. Την Εχω περιπου 2 μηνες κ μπορω να πω πως ειναι πολυ στιβαρη σαν κατασκευη κ κραταει την 47αρα που εχω βαλει πανω με ευκολια σε οποια θεση και αν την βαλω. Το μονο ισως αρνητικο στην περιπτωση μου ειναι οτι η τηλεοραση μου εχει vesa 400x400 και αυτη ειναι για μεχρι 800x400 με αποτελεσμα ο οριζοντιος βραχιονας πισω απο την τηλεοραση να με ενοχλει οταν θελω να βαλω καποιο usb η hdmi καλωδιο.

Very good and sturdy construction, very promising.
It includes everything necessary to fit on any TV and to be screwed onto the wall. I highly recommend it!