Amazon.com: 1.25G Single Mode SFP LC Module for Cisco GLC-LH-SMD, 1000Base- LX/LH Mini GBIC, Gigabit SFP, 1310nm SMF, up to 20km, for Cisco, Meraki,Ubiquiti UF-SM-1G,TP-Link TL-SM311LS and More, 2-Pack : Electronics
Cisco SFP Modules for Gigabit Ethernet Applications Data Sheet - Cisco
Amazon.com: 1.25G SFP Transceiver 1000Base-LX, 1310nm SMF, up to 10 km, for Cisco GLC-LH-SMD, Meraki MA-SFP-1GB-LX10, Ubiquiti UniFi, Fortinet, Mikrotik, D-Link, Supermicro, Netgear, TP-Link TL-SM311LS and More : Electronics