From the output port of the fiber optic terminal, you can see the red light, which is not a laser and is not harmful to the human eye. Dirt and dust can block the transmission of light waves.

Therefore, do not touch the connector when using it. When not in use, put the dust cap on the port.

In addition, the fiber optic cable cannot be bent and twisted excessively, otherwise it will cause permanent damage and cannot be used.

Optical fiber terminals require two conversions of photoelectric and electro-optic, which inevitably lead to loss, but the optical fiber is not susceptible to electromagnetic interference like copper wire, and can be better guaranteed in long-distance transmission.