https://utoptek.en.made-in-china.com/product/DGHrSAdxsIVa/China-Gpon-Olt-Class-C-SFP-Module-Sc-20km-Tx1490-Rx1310nm-7dBm-for-Huawei-Zt-E-Odi-V-Sol-Hioso-Olt-Switch-Using.html
Gpon Olt Class C+++ SFP Module Sc 20km Tx1490/Rx1310nm 7dBm for Huawei/Zt E/Odi, V-Sol, Hioso Olt...