DIGITUS Gigabit Multimode/Singlemode Media Converter — SFP to SFP
2 × SFP slots100/1000Base-XMM ↔ SM fibre5 V adapter included
The DIGITUS DN-82133 is a fibre-to-fibre media converter with two SFP slots: it joins two optical links that cannot talk to each other directly, for example a multimode run inside a building and a single-mode line arriving from another site, or two links on different wavelengths. It works at 100 Mbps (155 Mbps line rate) or 1 Gbps (1.25 Gbps), with the optics chosen by the SFP modules you fit.
Typical users are installers extending an existing multimode backbone over a longer single-mode route, or connecting a provider single-mode handover to older multimode cabling, without replacing switches at either end.
Before you order: There is no RJ45 port and no SFP module in the box. You need two SFP modules — one per slot — each matching the fibre and the module at its far end, and both modules must run at the same speed (both 100 Mbps or both 1 Gbps).
What's in the Box
- 1 × DIGITUS DN-82133 SFP-to-SFP media converter
- 1 × power adapter (5 V DC, max 1 A)
- 1 × quick start guide
- No SFP modules or fibre patch cords included
What It Means in Practice
- Multimode to single-mode: fit a 1000Base-SX module on the multimode side and a 1000Base-LX module on the single-mode side, and the two runs become one Gigabit link.
- Wavelength or distance change: put different modules in the two slots (e.g. 1310 nm short-reach and 1550 nm long-reach) to bridge links built on different optics.
- Supported fibre: multimode 50/125, 62.5/125 and 100/140 µm; single-mode 8.3, 8.7, 9 and 10/125 µm; multimode at 850/1310 nm and single-mode at 1310/1550 nm, depending on the modules.
- Distance on each side is set by the SFP module, not by the converter.
- Small standalone box (95 × 70 × 26 mm), 3.5 W consumption, with status and activity LEDs.
What Will Not Work
- Connecting a copper RJ45 device — use an RJ45-to-SFP converter instead.
- 10G SFP+ modules — the slots run at 100 Mbps or 1 Gbps only.
- Mixing speeds, e.g. a 100 Mbps module in one slot and a 1 Gbps module in the other.
- Operating without modules — both slots must be populated.
- Link Fault Pass-through or DIP-switch functions — DIGITUS does not list them for this model.
Key Features
Two open SFP slots
Choose optics for each side independently: multimode, single-mode, different wavelengths or reach.
100M or Gigabit
Runs 100Base-X (155 Mbps) or 1000Base-X (1.25 Gbps), matching the modules fitted.
Wide fibre support
50/125, 62.5/125 and 100/140 µm multimode plus 8.3–10/125 µm single-mode.
Low power
5 V adapter, 3.5 W maximum consumption, LEDs for status and activity.
Technical Specifications
| Identification |
| Part Number |
DN-82133 |
| EAN / GTIN |
4016032445753 |
| Brand |
DIGITUS |
| Connectivity |
| Ports |
2 × SFP slot, 100/1000Base-X |
| Data rates |
155 Mbps / 1.25 Gbps |
| Multimode fibre |
50/125, 62.5/125, 100/140 µm · 850/1310 nm |
| Single-mode fibre |
8.3, 8.7, 9, 10/125 µm · 1310/1550 nm |
| Distance |
depends on SFP modules |
| Physical |
| Power |
External adapter 5 V DC, max 1 A |
| Consumption |
3.5 W |
| Dimensions |
95 × 70 × 26 mm |
| Weight |
0.30 kg |
| Operating temperature |
-10 to 55 °C |
| LEDs |
Status, activity |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
DIGITUS does not publish a product warranty term for this model — claims handled through Singular |
Frequently Asked Questions
How many SFP modules do I need?
Two for this converter (one per slot), plus whatever modules sit in the devices at the two far ends. Each pair across a fibre must match in type and wavelength.
Can I use it to connect copper?
No. For copper RJ45 to fibre, choose an RJ45-to-SFP media converter such as DIGITUS DN-82140 (with PoE) or a non-PoE model.
Does it work with BiDi single-fibre modules?
DIGITUS lists standard 100/1000Base-X SFP use; BiDi modules are SFP format, but they must be paired with the opposite-wavelength module at the far end. Ask us to check your exact modules.
Singular Expert Insight · Buyer's Guide
An SFP-to-SFP converter is the neat answer when the problem is the fibre, not the switch: old multimode in the building, new single-mode outside. Order the two modules at the same time and keep a note of which wavelength sits on which side. If the run ends on a switch with free SFP slots, one of our
switches with SFP ports with the right module may remove the need for a converter entirely.
✓ Buy it if you must join a multimode and a single-mode run, or two links with different optics, at 100 Mbps or 1 Gbps.
✕ Skip it if you need an RJ45 port, 10 Gigabit, or you do not want to buy SFP modules separately.
→ Also consider DIGITUS DN-82124 (fixed SC multimode-to-singlemode, no modules needed) or an RJ45-to-SFP converter.
Send us the fibre types, wavelengths and distances on both sides and we will match the two SFP modules for you before you order.