# SFP transceiver module BlueOptics TN-SFP-LXB21T-BO Fiber optic 20000 m

**URL:** https://aio.lv/en/product--blueoptics-tn-sfp-lxb21t-bo--4471698
**Data updated:** 2026-02-25 16:35 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** TN-SFP-LXB21T-BO
**EAN:** 4063232002002
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 47.99 €
**Prices and availability valid until:** 2026-08-17 23:59
**Price without VAT (21%):** 39.66 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-tn-sfp-lxb21t-bo--4471698

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.08.2026 | free |
| Pickup points | 20.08.2026 | 1.79 EUR |
| Courier delivery to door | 20.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics TN-SFP-LXB21T-BO is a fiber optic SFP transceiver module designed for high-speed data transmission. It supports a maximum transfer distance of 20000 m, making it ideal for long-range networking applications. The module is lightweight at 20 g and comes in an aluminum housing, ensuring durability and reliability in various environments.

## Long description

The BlueOptics TN-SFP-LXB21T-BO is a compact SFP fiber optic transceiver module designed for single-mode links up to 20,000 m. It implements a 1000BASE-BX-U configuration with LC simplex connector, pairing a 1550 nm transmitter and a 1310 nm receiver for bi-directional transmission over a single fiber. Housed in aluminium and weighing approximately 20 g, the module follows MSA mechanical form-factor standards and is intended for use in network equipment that supports SFP 1000BASE-BX-U modules.
Advantages
The module provides long-reach single-mode connectivity with up to 20 km transmission range, low weight and an aluminium housing for mechanical stability. It supports standardized SFP interfaces and LC simplex connectors for broad compatibility with switches, routers and other optical devices. The transceiver offers digital diagnostics (DDM/DOM) capability for monitoring supply voltage, laser bias, transmit and receive power and temperature when the host hardware supports these functions.
Suitable for
Long-distance Ethernet links in campus and metropolitan networks
Point-to-point fiber connections between sites up to 20 km apart
Integration into switches, routers, storage systems and media converters with SFP ports
Environments requiring optical isolation from electromagnetic interference
Key specifications
Interface type: SFP (MSA compliant)
Data rate: 1.25 Gbps (1000BASE-BX-U)
Optical fiber type: Single-mode fiber (SMF)
Tx wavelength: 1550 nm
Rx wavelength: 1310 nm
Connector: LC simplex
Maximum link distance: 20,000 m (20 km)
Housing material: Aluminium
Weight: approx. 0.02 kg
Digital diagnostics: DDM/DOM support (if supported by host)
How to use
Install the transceiver into a compatible SFP slot on your switch, router or media converter until it clicks into place, following the host device manufacturer’s insertion instructions. Connect an appropriate single-mode LC simplex patch cord to the module and to the remote transceiver or patch panel. Ensure correct fiber polarity for bi-directional BX operation (transmit and receive wavelengths are different) and verify link status through the host equipment. If available and enabled by the host, use the DDM/DOM interface to monitor operational parameters such as optical power and temperature.
Usage recommendations
Handle the optical interfaces with dust caps when not in use, avoid bending single-mode fiber beyond its minimum bend radius, and verify that the host device supports 1000BASE-BX-U and DDM if you intend to use diagnostic functions. For optimal performance, use high-quality single-mode patch cords and ensure connectors are clean before mating.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Fiber ethernet cabling technology | 1000BASE |
| Ethernet LAN | Yes |
| Maximum transfer distance | 20000 m |
| Rx wavelength (max) | 1550 nm |
| Tx wavelength (max) | 1310 nm |

### Network

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.02 kg |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 30 g |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

### Features

| Feature | Value |
|---|---|
| Product colour | Aluminium |

## FAQ

### How much does the SFP transceiver module BlueOptics TN-SFP-LXB21T-BO cost, and is it available for purchase?

The price is 47.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 91 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 17.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### 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 BlueOptics 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 BlueOptics 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, weight, product colour, 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/4471698/64302847_large.webp