TP-Link MC100CM - 2.2 WDM Fast Ethernet Media Converter

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2. The SC fiber connector of MC112CS transmits data by 1310nm
short wave laser while receives data by 1550nm short wave laser
on one single-mode fiber.
Transmits and receives data on the same fiber
Note:
You have to use MC111CS and MC112CS at the same time to
cooperate.