# SFP WDM fiber transceiver pair Extralink 1.25G 1310/1550nm single‑mode 3km SC DOM

**URL:** https://aio.lv/en/product--extralink-ex2220--988449
**Data updated:** 2025-12-03 12:34 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** Extralink
**Manufacturer code:** EX.2220
**EAN:** 5902560362220
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Pair of Extralink SFP WDM fiber transceivers supporting 1.25 Gbit/s (1250 Mbit/s) over single‑mode fiber. One module transmits at 1310 nm and the other at 1550 nm, with SC connectors and DOM support for optical monitoring. Designed for point‑to‑point links up to 3 km. Ideal for upgrading switches, routers and fiber links requiring wavelength separation.

## Long description

The Extralink SFP WDM fiber transceiver pair is a high-performance networking solution designed for reliable data transmission over single-mode fiber optic cables. This set includes two modules that operate at 1310 nm and 1550 nm wavelengths, enabling bidirectional communication over a single fiber strand. With a data transfer rate of 1.25 Gbps and a reach of up to 3 km, these transceivers are suitable for point-to-point network connections in various professional environments.
Advantages
These transceivers offer an economical and efficient way to expand network infrastructure while maintaining high signal integrity. The inclusion of Digital Optical Monitoring (DOM) allows for real-time tracking of critical parameters, ensuring proactive maintenance and network stability. The modules are fully compliant with SFP Multi-Source Agreement (MSA) and SFF-8472 standards, ensuring broad compatibility with a wide range of switches, routers, and other networking hardware. Furthermore, the integrated FP laser transmitter and PIN photodiode with a transimpedance preamplifier provide consistent performance, while the design meets Class I laser safety requirements.
Suitable for
Upgrading existing fiber optic links
Point-to-point connections between switches and routers
Extending network reach up to 3 km
Wavelength division multiplexing applications
This product is not suitable for multi-mode fiber optic cabling, as it is specifically engineered for single-mode fiber infrastructure. It may also not be appropriate for long-distance links exceeding 3 km, as signal degradation may occur beyond the specified range.
Key specifications
Interface type: SFP
Data transfer rate: 1.25 Gbps
Wavelengths: 1310 nm and 1550 nm
Fiber type: Single-mode
Maximum distance: 3 km
Connector type: SC
Monitoring: DOM support
How to use
To install the transceivers, ensure that your networking device is powered off or supports hot-swapping if applicable. Insert the SFP module into the designated SFP port on your switch or router until it clicks into place. Connect the single-mode fiber optic cable with an SC connector to the transceiver. Once connected, power on the device and verify the link status through the network management interface. The DOM feature can be accessed via the device software to monitor optical power levels and temperature.
What to consider before purchase
Verify that your networking equipment supports SFP modules
Ensure the use of single-mode fiber optic cabling
Confirm that the required transmission distance does not exceed 3 km
Check compatibility with your existing SFP MSA-compliant hardware
Ensure that the fiber optic connectors are clean and free of dust before insertion to maintain optimal signal quality and prevent damage to the optical components.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Wavelength | 1550 nm |
| Fiber optic connector | SC |
| Maximum transfer distance | 3000 m |
| Wavelength-division multiplexing (WDM) | Yes |
| Single-mode fiber (SMF) supported | Yes |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Packaging data

| Feature | Value |
|---|---|
| Number of products included | 2 pc(s) |

### Certificates

| Feature | Value |
|---|---|
| Certification | FCC |

### Sustainability

| Feature | Value |
|---|---|
| Sustainability certificates | CE, RoHS |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Extralink products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Extralink service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: interface type, maximum data transfer rate, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/988449/54589627_large.webp