# SFP transceiver module BlueOptics SFP-21AH-BO 1250 Mbit/s

**URL:** https://aio.lv/en/product--blueoptics-sfp-21ah-bo--5245419
**Data updated:** 2026-03-07 15:14 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP-21AH-BO
**EAN:** 4063232272108
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 58.99 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 48.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp-21ah-bo--5245419

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFP-21AH-BO is a fiber optic SFP transceiver module with a maximum data transfer rate of 1250 Mbit/s. It features a metal housing, operates at an input voltage of 3.3 V, and weighs only 3 g. Ideal for high-speed data transmission in networking applications.

## Long description

The BlueOptics SFP-21AH-BO 1250 Mbit/s is a single-mode fiber optic SFP transceiver module designed for 1000BASE-BX-U applications. Encased in a metal housing and weighing just 3 g, it operates from a 3.3 V supply and supports optical data transfer at up to 1250 Mbit/s over distances up to 40 km. The module uses an LC simplex interface for single-fiber bi-directional transmission with a transmitter wavelength around 1490 nm and a receiver wavelength around 1310 nm, following MSA form-factor standards for broad compatibility with network switches, routers and storage systems that accept SFP modules.
Advantages
The SFP-21AH-BO combines compact metal construction with industry-standard SFP compatibility, offering a lightweight and robust option for fiber links. It supports Digital Diagnostic Monitoring (DDM/DOM) compliant with SFF-8472 for real-time status of supply voltage, laser bias current, transmit power, receive power and temperature when the host hardware supports the feature. Built to MSA specifications and populated with high-quality optical and electronic components, this transceiver is intended for long operational lifetimes and stable 1.25 Gbit/s class performance on single-mode fiber.
Suitable for
Fiber uplinks between switches and routers over single-mode fiber
Long-distance Ethernet links up to 40 km
Storage networking and interconnects requiring 1.25 Gbit/s optical ports
Replacement or expansion of SFP-enabled enterprise and carrier equipment
Key specifications
Maximum data transfer rate: 1250 Mbit/s
Maximum transfer distance: up to 40,000 m (single-mode fiber)
Connector type: LC simplex (SFP form factor)
Transmit wavelength: ~1490 nm; receive wavelength: ~1310 nm
Operating voltage: 3.3 V
Housing material and colour: metal, silver
Weight: approximately 0.003 kg
Supports Digital Diagnostic Monitoring (SFF-8472) when host supports DDM/DOM
How to use
Install the BlueOptics SFP-21AH-BO into a compatible SFP port on your switch, router or other network device while the host is powered down or following the device manufacturer’s hot-plugging guidelines. Connect an appropriate single-mode LC patch cable or patch panel to the LC simplex interface and ensure the remote transceiver is configured for the corresponding single-fiber bi-directional wavelengths. Verify link status and, if available, read DDM/DOM parameters from the host to confirm optical power levels and temperature are within expected ranges.
Usage recommendations
Use single-mode LC patch cords rated for long-distance transmission and avoid bending the fiber beyond its minimum bend radius. Confirm that the network device firmware or software supports third-party SFP modules and DDM/DOM if you intend to use diagnostic monitoring. For installation in multi-vendor environments, test interoperability and, when planning links near the 40 km maximum, verify optical budget and margin against connector, splice and fiber losses.

## Specifications

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum operating temperature | 70 °C |
| Number of products included | 1 pc(s) |
| SFP transceiver type | Fiber optic |
| SFP transceiver standard | BX-U |

### Network

| Feature | Value |
|---|---|
| Maximum data transfer rate | 1250 Mbit/s |
| Fiber ethernet cabling technology | 1000BASE |
| Duplex system | Full |

### Ports & interfaces

| Feature | Value |
|---|---|
| Fiber optic connector | SFP |

### Performance

| Feature | Value |
|---|---|
| Maximum transfer distance | 40000 m |
| Rx wavelength (max) | 1490 nm |
| Tx wavelength (max) | 1310 nm |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.003 kg |

### Power

| Feature | Value |
|---|---|
| Input voltage | 3.3 |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | 0 - 70 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 2 g |

### Features

| Feature | Value |
|---|---|
| Product colour | Silver |
| Housing material | Metal |

## FAQ

### How much does the SFP transceiver BlueOptics SFP-21AH-BO cost, and is it available for purchase?

The price is 58.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 131 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 28.07.2026 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: maximum data transfer rate, maximum transfer distance, weight, fiber optic connector, 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/5245419/54614677_large.webp