The ELRO 111m is a double compact receiver capable of demodulating two video signals transmitted on two optical fiber through two minitrasmettitori ELTO VM1 or any transmitter amplitude modulator. the use of this stand-alone module needs no adjustment during installation, there are also reports that allow to verify the proper operation of the system: a yellow LED verifies the device’s power,A green LED verifies the presence of video sync signal, and finally a red LED determines the condition of release of the automatic gain control circuit, and then the output signal no longer meets the characteristics of the system. The two video outputs for each channel let you monitor the route without stopping the service.