DIGITUS DN-81004 Gigabit BiDi SFP Module Tx 1550 nm Rx 1310 nm LC Simplex Single-Mode up to 20 km
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Digitus
DIGITUS DN-81004 Gigabit BiDi SFP Module Tx 1550 nm Rx 1310 nm LC Simplex Single-Mode up to 20 km
€35.14 inc. VAT
DN-81004
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Competitive EU pricing
Delivered to Cyprus from EU stock
Local warranty support
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DIGITUS DN-81004 — Gigabit BiDi SFP, One Fibre, 20 km
1.25 GbpsSingle fibreTx 1550 · Rx 1310Up to 20 km
The DIGITUS DN-81004 is a Gigabit BiDi SFP module that runs a full-duplex link over one single-mode fibre: it transmits at 1550 nm and receives at 1310 nm through an LC simplex connector, up to 20 km. DIGITUS lists it as universal (MSA) and Cisco compatible, for links between buildings where only one fibre strand is free. In practice, BiDi optics are the answer when only one fibre strand is free between two buildings, or when leased dark fibre is charged per strand. Order both ends together, check the wavelengths are swapped, and use simplex single-mode LC cords.
Compatibility — check before buying:
It is one half of a pair: the far end must transmit at 1310 nm and receive at 1550 nm — DIGITUS names the DN-81003. It will not link to another DN-81004 or to the DN-81004-01, which use the same wavelengths. It uses an LC simplex connector on one single-mode strand and has no DDM. The DN-81004-01 is the HP/Aruba-coded version with DDM. 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 switch model and the cable run and we check it before you order.
Best For
✓ Links where only one fibre strand is free
✓ Leased dark fibre charged per strand
✓ Gigabit links between buildings
✓ Single-mode runs up to 20 km
✓ Switches that accept MSA optics
✓ Replacing a failed DN-81004
Key Features
Half the fibre
Transmit and receive share one single-mode strand on different wavelengths, so one fibre carries a full Gigabit link.
One fibre, two wavelengths
A BiDi module sends on one wavelength and receives on another over a single single-mode strand, so one fibre does the work of two. The far end must be the opposite module, with the two wavelengths swapped.
Hot-swappable
Modules 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 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 module, the patch cords and any spares in one go and the link works on day one.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
We fit the DN-81004 with its DN-81003 partner when two buildings share a single free strand of single-mode fibre. Label each end on the patch panel, so a future swap does not put two identical modules on one link. 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 or the switches they plug into.
Buyer’s Guide
Buy it if
You need a 1G link over a single single-mode fibre up to 20 km, and you order the Tx 1310 partner for the far end.
Skip it if
Two fibres are free (a duplex LX module is simpler), you need DDM, or your switch is HP/Aruba (DN-81004-01).
Also consider
DIGITUS DN-81011 for duplex single-mode.
Port Spped
- 1 Gbps
Χαρακτηριστικά
Product Code
04:365836
EAN Code
4016032305729
Manufacturer
Digitus