For extended distances the 1000Base-LH transceivers can support distances up to 70 kilometers.
Specification:
Device Type: SFP (mini-GBIC) transceiver module
Form Factor: Plug-in module
Connectivity Technology: Wired
Cabling Type: 1000Base-LH
Data Link Protocol: Gigabit Ethernet
Data Transfer Rate: 1 Gbps
Interfaces: 1 x Ethernet 1000Base-LH
Designed For: Juniper EX2300-24P EX2300-C-12P
Specification:
Device Type: SFP (mini-GBIC) transceiver module
Form Factor: Plug-in module
Connectivity Technology: Wired
Cabling Type: 1000Base-LH
Data Link Protocol: Gigabit Ethernet
Data Transfer Rate: 1 Gbps
Interfaces: 1 x Ethernet 1000Base-LH
Designed For: Juniper EX2300-24P EX2300-C-12P