400G QSFP112 LR4 optical transceiver operates at 1310nm wavelength, supporting high-speed Ethernet transmission up to 10km over single-mode fiber (SMF) with advanced PAM4 modulation. Equipped with duplex LC/UPC connectors, the optical transceiver has DOM function enabling real-time monitoring of optical power, temperature, voltage and bias current. 400G QSFP112 LR4 optical transceiver is hot-pluggable, low-power and highly reliable, ideal for long-reach data center interconnection, enterprise backbone links and next-generation 400G Ethernet networks.