VOA Variable Optical Attenuator, 20dB with Automatic Adjustment, LC/PC Connector, Pluggable Module OTS3000-VOA is a kind of function card in optical communication integrated platform. It can be set into automatic mode or manual mode to adjust the output power of the optical path, thus to meet customer’s need of adjusting the optical power at will. VOA can work with other function cards (such as DWDM, OADM, DCM, and OTU）together to construct the complete optical network transmission system. https://www.glsunmall.com/product/ots3000-voa-variable-optical-attenuator.html