This product is an equipment that transmits the video channel between the camera and monitor and the bidirectional control data channel between the control keyboard and the receiver box using one core of optical cable.
It is a WDM (Wavelength Division Multiplexing) method that utilizes optical characteristics to transmit long-distance relay-free and is not affected by electric and magnetic fields.
LEDs for data input and output indication are attached to the transmitting and receiving parts, so you can visually check the data communication status without separate equipment, and the video transmitting and receiving parts use seven-segment LEDs to check the video input and output voltage and optical cable disconnection in real time.