TP-Link Omada ISM311LM Industrial 1000BASE-SX SFP Module · LC Duplex Multimode · 850 nm · up to 550 m · -40 to 85 °C
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TP-LINK
TP-Link Omada ISM311LM Industrial 1000BASE-SX SFP Module · LC Duplex Multimode · 850 nm · up to 550 m · -40 to 85 °C
€33.17 inc. VAT
ISM311LM
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TP-Link Omada ISM311LM — Industrial Gigabit SX SFP
1000BASE-SX850 nm · multimodeLC duplex · 550 m-40 to 85 °C
The TP-Link Omada ISM311LM is an industrial-temperature 1000BASE-SX SFP transceiver that carries Gigabit Ethernet over multimode fibre at 850 nm for up to 550 m, rated to operate from -40 to 85 °C. It is built for industrial switches, outdoor cabinets and plant rooms where a standard commercial SFP (0–70 °C) is not rated for the temperature swings.
It uses an LC duplex connector (two fibres: one transmit, one receive) and supports DDM, so compatible switches can report optical power and module temperature.
Before you order: This is a short-range multimode (SX, 850 nm) module. The far end must also be 1000BASE-SX on multimode fibre — it will not link to an LX/1310 nm module or over single-mode fibre.
What's in the Box
- 1× TP-Link Omada ISM311LM SFP module
- Installation guide
- Fibre patch cords not included (multimode LC duplex needed)
What It Means in Practice
- Industrial rating: operating and storage temperature -40 to 85 °C — suited to DIN-rail industrial switches and outdoor enclosures.
- Up to 550 m on multimode fibre (TP-Link does not publish a per-OM-grade breakdown).
- Works in standard 1G SFP ports (SFP MSA, hot-swappable).
- Order one module for each end of the link.
What Will Not Work
- Single-mode fibre or an LX (1310 nm) module at the far end.
- Links longer than 550 m.
- 10G-only SFP+ ports that do not accept 1G modules.
- BiDi (single-fibre) links — this module needs two fibres.
Key Features
Industrial temperature
-40 to 85 °C operating and storage.
Gigabit SX
1.25 Gbps over 850 nm multimode, up to 550 m.
DDM
Digital diagnostics for optical power and temperature.
Standard SFP
MSA compliant, hot-swappable.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight · Buyer's Guide
Industrial SFPs cost little more than commercial ones and remove a common failure point in hot or cold enclosures. Match SX with SX and keep to multimode. Browse our network cables for the patch cords.
✓ Buy it if you need a Gigabit multimode link of up to 550 m in an industrial or outdoor environment.
✕ Skip it if your fibre is single-mode or the run is longer than 550 m — choose an LX module instead.
→ Also consider a 1000BASE-LX single-mode module for longer runs, or a BiDi pair if only one fibre is free.
Not sure it fits your setup? Send us the model of your rack, switch or device and we will check compatibility before you order.
Features - TP-LINK - ISM311LM
More Details
Product Code
CP53790
EAN Code
1210002601979
Manufacturer
TP-LINK