Based on this product's specifications, here are some alternatives and similar models
SFP Transceiver Module ESUS IT J4859D-C LC 1 Gbps 10 km
Summary description:
Replacement SFP transceiver module ESUS IT J4859D-C with LC connector supporting 1 Gbps data rate and up to 10 km optical reach. Designed for use in switches, routers and optical network equipment that accept standard 1 G SFP modules. Suitable for extending fiber links in enterprise LANs, data centers and telecom access networks.