EFB-Elektronik SFP1000LX Cisco GLC-LH-SMD Compatible SFP Transceiver 1000BASE-LX 1310 nm LC Single-Mode 20 km DDM
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EFB
EFB-Elektronik SFP1000LX Cisco GLC-LH-SMD Compatible SFP Transceiver 1000BASE-LX 1310 nm LC Single-Mode 20 km DDM
€22.5 inc. VAT
SFP1000LX
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EFB-Elektronik SFP1000LX — 1G LX Single-Mode SFP, 20 km, Cisco Compatible
1 Gbps1310 nm · LCUp to 20 kmCisco coded
The EFB-Elektronik SFP1000LX is a Gigabit SFP transceiver for single-mode fibre, coded as Cisco GLC-LH-SMD: 1000BASE-LX with a 1310 nm Fabry-Perot laser over an LC duplex connection, up to 20 km on 9/125 µm fibre, with digital diagnostics. EFB states it also works in standard MSA SFP ports. In practice, single-mode optics are the choice when a link leaves the building or runs several hundred metres: the OS2 fibre used by carriers and campus backbones carries the signal for kilometres with little loss. Before you order, confirm the fibre is single-mode at both ends and note the length and the number of patch panels on the way.
Compatibility — check before buying:
It is coded as Cisco GLC-LH-SMD; HP / Aruba switches that check optics may refuse it. It needs single-mode fibre on two strands and an LX module at the far end — it will not run on multimode fibre and will not pair with a single-fibre BiDi module. On very short runs a 20 km optic can overload the receiver; tell us the distance. Keep the dust cap on until you connect the fibre, and clean both connector ends before every mating — dirt is the most common cause of a link that will not come up. Not sure? Send us your device model and the cable run and we check it before you order.
Best For
✓ Cisco switches using GLC-LH-SMD optics
✓ Standard MSA SFP ports
✓ Gigabit links between buildings
✓ Campus backbones up to 20 km
✓ Links that need DDM readings
✓ Replacing a failed 1G LX module
Key Features
Cisco GLC-LH-SMD coding
Programmed as the Cisco GLC-LH-SMD, so Cisco switches that check optics identify it as a supported LX/LH module.
Single-mode fibre, long reach
Built for single-mode (OS1/OS2) fibre, the type used between buildings, floors and sites. It will not run over the orange or aqua multimode fibre found in many racks — the fibre type has to match at both ends.
Monitoring you can read
Digital diagnostics (DDM) let the host report temperature, laser power and received light, so a dirty connector or a failing link shows up before users call.
Hot-swappable
Modules and cables plug into a live port without shutting the switch down, so a link can be added or replaced during working hours. Seat it until it clicks and use the latch or pull tab to remove it.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
We fit the SFP1000LX for Gigabit single-mode links between buildings on Cisco or standard SFP ports. Order one for each end and single-mode LC duplex cords. For multimode runs inside the building, the SFP1000SX is the cheaper choice. Every order is backed by Singular’s local support in Cyprus — if a link will not come up, send us the port status and we help you find out whether it is the module, the cable or the configuration. Browse all transceivers and DAC cables or the switches they plug into.
Buyer’s Guide
Buy it if
You need a 1G single-mode link up to 20 km on a Cisco or standard MSA SFP port, with DDM.
Skip it if
Your fibre is multimode, only one strand is free, or your switch only accepts HP / Aruba-coded optics.
Also consider
EFB-Elektronik SFP1000SX for multimode runs.
Features - EFB - SFP1000LX
More Details
Product Code
04:401377
EAN Code
4049759255473
Manufacturer
EFB