DIGITUS DN-81003 BiDi SFP Transceiver 1000BASE-BX Single Fibre LC Simplex Tx 1310 Rx 1550 nm up to 20 km
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Digitus
DIGITUS DN-81003 BiDi SFP Transceiver 1000BASE-BX Single Fibre LC Simplex Tx 1310 Rx 1550 nm up to 20 km
€23.61 inc. VAT
DN-81003
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Competitive EU pricing
Delivered to Cyprus from EU stock
Local warranty support
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DIGITUS DN-81003 — 1G BiDi Single-Fibre SFP, 20 km
1 GbpsBiDi · LC simplexUp to 20 kmMSA / Cisco coded
The DIGITUS DN-81003 is a Gigabit BiDi SFP transceiver that runs a complete link over one single-mode fibre: it transmits at 1310 nm and receives at 1550 nm through an LC simplex connector, up to 20 km. It is one half of a pair — DIGITUS names the DN-81004 as the module for the opposite end. In practice, BiDi modules are the answer when a building link has only one free single-mode strand, or when you want to double the links on an existing pair. They are always bought as a matched pair: one end transmits 1310 nm, the other 1550 nm. Before you order, confirm the fibre is single-mode and note the length and the patch panels on the way.
Compatibility — check before buying:
This is not a normal two-fibre LX module, even though its title reads like one: it uses one fibre and an LC simplex connector. It links only to a DN-81004 (or another BiDi module that sends 1550 nm and receives 1310 nm) — two DN-81003 will not link, and it will not talk to a DN-81001 or any duplex LX module. Order the DN-81004 together with it. 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
✓ Links with only one free fibre strand
✓ Doubling links on an existing fibre pair
✓ Building-to-building links up to 20 km
✓ Single-mode (OS1/OS2) fibre
✓ Switches that accept MSA optics
✓ Paired with a DIGITUS DN-81004
Key Features
A full link on one strand
Transmit and receive run on different wavelengths over the same fibre, so a link needs one strand instead of two.
One fibre instead of two
A BiDi module sends and receives on different wavelengths over a single single-mode strand, so one fibre carries the whole link — useful where only one strand is free.
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.
Plan both ends together
A link only comes up when both ends use the same standard, speed and media. Order the far-end part, the cable and any spares in one go and the link works on day one.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
We suggest the DN-81003 / DN-81004 pair when a building link has only one free single-mode strand. Order both modules together, with a single-fibre LC simplex cord for each end. If you have two strands free, the DN-81001 on both ends is simpler. 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 link up to 20 km over one single-mode strand, and you order the DN-81004 for the far end.
Skip it if
You have two free strands and want standard LX optics, or your fibre is multimode.
Also consider
DIGITUS DN-81004, the opposite-end module.
Port Spped
- 1 Gbps
Χαρακτηριστικά
Product Code
04:365834
EAN Code
4016032305682
Manufacturer
Digitus