Cisco compatible 100GBASE-4WDM-40 QSFP28 transceiver supports up to 40km link lengths over LC duplex SMF fiber. This transceiver is compliant with SFF-8661, SFF-8636 and IEEE 802.3-2018 standards. Digital diagnostics monitoring is available via a 4-wire serial interface, as specified in SFF-8472. Featuring an operating temperature range of -40°C to 85°C, this industrial fiber optic transceiver can work in harsh industrial environments, such as telecommunication, data processing & management, the application of industrial and factory automation, outdoor applications, rail and intelligent transportation systems (ITSs), marine, oil and gas, mining etc.