# Fiber optic transceiver module BlueOptics SFP-21B-BO 40000 m Aluminium

**URL:** https://aio.lv/en/product--blueoptics-sfp-21b-bo--4468745
**Data updated:** 2026-02-25 16:33 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP-21B-BO
**EAN:** 4063232646961
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 67.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 56.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp-21b-bo--4468745

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFP-21B-BO is a fiber optic transceiver module designed for high-speed data transmission over long distances up to 40000 m. It features an SFP interface and is made of durable aluminum, weighing only 20 g. This module is ideal for network applications requiring reliable and efficient connectivity.

## Long description

The BlueOptics SFP-21B-BO 40000 m Aluminium is a single-mode fiber optic transceiver module with an SFP interface, designed for optical data links up to 40,000 meters. Constructed with an aluminum housing and weighing approximately 20 g, this transceiver supports bidirectional transmission using separate transmitter and receiver wavelengths over LC simplex connector and complies with MSA form-factor standards. It is intended for integration into network hardware that supports SFP modules and is suitable for high-speed applications that require a stable single-mode fiber connection.
Advantages
The module provides long-reach single-mode transmission up to 40 km while remaining compact and lightweight. Its aluminum enclosure offers mechanical durability and thermal dissipation. Conformance to SFP/MSA form factors and the LC simplex connector ensures broad interoperability with compatible switches, routers and storage systems. Digital diagnostics (DDM/DOM) support enables remote monitoring of key parameters such as supply voltage, laser bias current, optical output and input power, and temperature for simplified fault analysis and maintenance.
Suitable for
Long-distance single-mode Ethernet links (up to 40 km)
Interconnection of switches and routers in campus and metro networks
Fiber uplinks to distribution frames and patch panels
Fiber channel or SDH/SONET interfaces requiring SFP modules
Key specifications
Interface type: SFP (MSA form-factor)
Transmission distance: up to 40,000 m (single-mode fiber)
Connector: LC simplex
Wavelengths: typical bidirectional pair (separate transmit and receive wavelengths for single-fiber operation)
Housing material: aluminium
Weight: approx. 20 g
Digital diagnostics: DDM/DOM (per SFF-8472) for real-time monitoring
Supported protocols: Ethernet and other optical high-speed protocols up to gigabit class
How to use
Insert the SFP module into an available SFP port on a compatible switch, router or other network device while the host device is powered according to the vendor’s instructions. Connect an appropriate single-mode LC patch cord to the LC simplex connector and ensure correct fiber polarity for bidirectional single-fiber operation. Verify link synchronization and protocol settings on both endpoints. If the host device supports DDM/DOM, monitor the module’s diagnostic parameters from the management interface to confirm optical power, temperature and supply values.
Usage recommendations
Use high-quality single-mode fiber and compatible LC patch cords, avoid sharp bends and maintain proper fiber polarity. Confirm device compatibility with the host vendor’s hardware and enable DDM/DOM monitoring when available to aid in preventive maintenance and fault diagnosis.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Fiber ethernet cabling technology | 1000BASE |
| Ethernet LAN | Yes |
| Maximum transfer distance | 40000 m |
| Rx wavelength (max) | 1310 nm |
| Tx wavelength (max) | 1490 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 Fiber optic transceiver BlueOptics SFP-21B-BO cost, and is it available for purchase?

The price is 67.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 114 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 27.07.2026 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/4468745/64296155_large.webp