Based on this product's specifications, here are some alternatives and similar models
Gigabit Media Converter LevelOne RJ45 to ST 20km
Summary description:
The LevelOne RJ45 to ST Gigabit Media Converter enables high-speed data transfer over single-mode fiber with a maximum distance of 20km. It supports a data rate of 1000 Mbit/s and complies with IEEE networking standards. The converter features ST fiber optic connectors, LED indicators for link and power status, and operates with a typical power consumption of 5W. Ideal for extending network reach in various applications.