# SFP Module TP-Link 1000Base-BX WDM Bi-Directional

**URL:** https://aio.lv/en/product--sfp-module-tp-link-1000base-bx-wdm-bi-directional--3476231
**Data updated:** 2025-12-29 10:56 (EET)
**Category:** Network Media Converters
**Manufacturer:** TP-LINK
**EAN:** 6935364030513
**Warranty:** 5 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sfp-module-tp-link-1000base-bx-wdm-bi-directional--3476231

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The TP-Link 1000Base-BX WDM Bi-Directional SFP Module is a fiber optic transceiver with a maximum data transfer rate of 1250 Mbit/s. It operates at an input voltage of 3.3 V and is compatible with SFP interfaces. The module is metallic and certified by FCC and CE, ensuring quality and reliability. Dimensions are 55.4 mm x 12.9 mm x 12.9 mm, making it compact for various applications.

## Long description

The TP-Link 1000Base-BX WDM Bi-Directional SFP Module is a compact metallic fiber optic transceiver compatible with standard SFP interfaces. It supports 1000Base-BX and WDM bi-directional technology to transmit and receive on a single strand of fiber, enabling network extension up to 10 km at a line rate up to 1250 Mbit/s. The module uses an LC (UPC) connector, operates from an internal +3.3 V supply and is FCC/CE certified.
Advantages
This SFP module reduces fiber cabling costs by using WDM bi-directional transmission over a single fiber strand while maintaining gigabit performance. Its compact metallic housing and standard SFP form factor ensure wide compatibility with routers, switches and media converters. The plug-and-play design requires no configuration and the module is intended to be used in pairs (TL-SM321A with TL-SM321B) for correct wavelength pairing.
Suitable for
Extending Ethernet links up to 10 km over single-mode fiber
Integration with TP‑Link routers, switches and media converters
Replacing or upgrading SFP ports that require LC (UPC) connectors
Key specifications
Standard: 1000Base-BX (WDM Bi-Directional)
Data rate: up to 1250 Mbit/s
Wavelengths: TX 1550 nm / RX 1310 nm
Maximum distance: 10,000 m (10 km)
Connector type: LC (UPC)
Power supply: internal +3.3 V
Form factor: SFP, metallic housing
Certifications: FCC, CE
How to use
Insert the TL-SM321A SFP module into an available SFP port on a compatible device (router, switch or media converter). Use this module paired with a complementary TL-SM321B module at the remote end to achieve WDM bi-directional communication (different wavelength in each direction). Connect the LC (UPC) fiber cables and verify link status on both devices. No additional configuration is required for basic operation.
Usage recommendations
For reliable operation, use single-mode fiber rated for the stated distance, ensure correct pairing with TL-SM321B, and avoid bending the fiber beyond recommended radii. Verify device compatibility with standard SFP modules and confirm firmware or device notes if a vendor-specific restriction exists.

## Specifications

| Feature | Value |
|---|---|
| Interface type | SFP |
| Number of products included | 1 pc(s) |
| SFP transceiver type | Fiber optic |
| Single-mode fiber (SMF) supported | Yes |

### Network

| Feature | Value |
|---|---|
| Maximum data transfer rate | 1250 Mbit/s |
| Networking standards | IEEE 802.3z |

### Ports & interfaces

| Feature | Value |
|---|---|
| Fiber optic connector | LC (UPC) |

### Performance

| Feature | Value |
|---|---|
| Maximum transfer distance | 10000 m |
| Fiber cable diameters supported (core/cladding) | 9/125 |
| Rx wavelength (max) | 1310 nm |
| Tx wavelength (max) | 1550 nm |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 12.9 mm |
| Width | 55.4 mm |
| Depth | 12.9 mm |

### Power

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

### Certificates

| Feature | Value |
|---|---|
| Certification | FCC, CE |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 10 - 90 |
| Storage temperature (T-T) | -40 - 80 |
| Operating temperature (T-T) | 0 - 70 |
| Storage relative humidity (H-H) | 5 - 90 |

### Features

| Feature | Value |
|---|---|
| Plug and Play | Yes |
| Product colour | Metallic |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 60 g |
| Package depth | 122.5 mm |
| Package height | 38.5 mm |
| Package width | 81.5 mm |

## FAQ

### How much does the SFP Module TP-Link 1000Base-BX WDM cost, and is it available for purchase?

The price is 24.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 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 09.07.2026 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, Bank cards on-line, Apple Pay, Google Pay. 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 TP-LINK 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 TP-LINK 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, 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.

### Where can I download the instructions for SFP Module TP-Link 1000Base-BX WDM?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/3476231/54600817_large.webp