If you have multiple devices in your home that need to be connected to a source from which an HDMI signal passes, there's no problem, not even if there are significant distances between devices or if, for example, the screen is in a hard-to-reach position with a cable.
If the signal quality is a good starting point, what needs to be considered immediately after is the distance that needs to be covered to best transmit the signal to the destination equipment.
In this case, HDMI extenders come to the rescue, allowing you to cover up to 70 meters between the signal source and the destination device.
Obviously, there are different types of these products, depending on the desired result and the layout of your home. 
While wireless HDMI extenders transmit a Full HD signal covering distances no greater than 20 meters, for longer distances, you need to use wired technology that utilizes an Ethernet cable; there are also extenders that transmit a 4K signal via cable and can cover much longer distances, up to 70 meters of cable. Furthermore, if the cables are fiber optic, the distances can be much greater.
In this case, these are solutions suitable not only for homes where, for example, a TV in a different room needs to be reached from a set-top box, but also in situations such as video surveillance, video conferencing, and teaching sessions in schools.
Another point to consider are accessories, such as the remote control, which allows for remote operation using infrared.



