SFP-GE-L, Cisco 1000BASE-LX/LH SFP (DOM) at discount
Amazon.com: HPC Optics Compatible with Cisco SFP-GE-L 1000BASE-LX SFP Transceiver | 1G LX SM 1310nm SFP-GE-L-HPC : Electronics
Amazon.com: 1.25G SFP Transceiver 1000Base-LX, 1310nm SMF, up to 10 km, Compatible with Cisco GLC-LH-SMD/SFP-GE-L, Meraki MA-SFP-1GB-LX10, Ubiquiti UniFi UF-SM-1G, Mikrotik, TP-Link TL-SM311LS, Pack of 4 : Electronics
Amazon.com: 4Pack 1.25G SFP Transceiver, 1000Base-LX Module, 1310nm LC Single Mode Module, up to 10 km, for Cisco GLC-LH-SMD/GLC-LH-SM/SFP-GE-L, Ubiquiti, Netgear, D-Link, Supermicro, Mikrotik