This product transmits video channel between camera and monitor, one-way voice channel signal of MIC (PRE-AMP output), two-way control data channel between control keyboard and receiver box, and one-way data channel of Contacts System (Normal Close, Normal Open) over optical cable 1 core.
It is a WDM (Wavelength Division Multiplexing) method that utilizes optical characteristics to transmit long-distance wirelessly 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 the presence or absence of optical cable disconnection in real time.