Extenders are devices that help us to carry a signal to further points without losing quality in it. Let's take as an example a digital signal that must be transmitted over an HDMI cable from 30 meters away. HDMI cables have large connectors that are difficult to pass through ductwork, and are fragile and their signal begins to decline after a few meters. In this case the solution is to use video extenders, a transmitter is placed where we have the source and a receiver where the end point is located. Both extenders will be connected by UTP cable, which will be in charge of transmitting the signal. The UTP cable is easy to handle, runs easily through ductwork and supports long runs, and its connectors (RJ45) are small, and can be "punched", unlike HDMI connectors. For longer distances fiber optic extenders can be used instead of UTP. The quality of the wiring will determine the distance the signal will travel.

Since the transmitter extender (TX) amplifies the signal, it must be supplied with electrical current. Grupo Covix implements in addition to extenders, all the necessary accessories to make any transmission problem transparent to the user, and to ensure that the signals are observed at the end point with the same quality as those originated from their source.