The ESFP transceivers are high performance, cost effective modules supporting multi-rate of 155Mbps~2. 67Gbps and 80km transmission distance with SMF. This topic describes the encapsulation types of optical modules on WDM products Small form-factor pluggable (SFP) optical modules are compact, hot-swappable, low-speed optical modules. They comply with the specifications defined in the multi-source agreement (MSA) and support synchronous optical. Huawei eSFP-GE-SX-MM850 is Optical Transceiver. 5~-3dBm,-20dBm,LC (-40~85),single-mode,10km Huawei OGSC10DD0 eSFP single-mode optical module, 1. 55km, LC) Basic Information Transmitter Optical Characteristics Receiver Optical Characteristics This 02315204 is 100% genuine Huawei product.