Based on this product's specifications, here are some alternatives and similar models
SFP Transceiver Module StarTech.com GLC-LH-SMD 1000BASE-LH 1GbE
Summary description:
The StarTech.com GLC-LH-SMD is a 1000BASE-LH SFP transceiver module designed for single mode fiber connections. It supports data rates up to 1250 Mbit/s and has a range of 20km with a wavelength of 1310nm. This module is compatible with Cisco devices and features DDM for monitoring. Its compact design ensures easy installation in SFP slots.