# Attenuator BlueOptics SFA21XK6 LC 6dB Black

**URL:** https://aio.lv/en/product--blueoptics-sfa21xk6--11262556
**Data updated:** 2026-03-07 19:55 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA21XK6
**EAN:** 4063232230313
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 53.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 44.62 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfa21xk6--11262556

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFA21XK6 attenuator provides a reliable solution for signal attenuation with a 6 dB rating. Designed with LC connectors, it ensures compatibility with various networking equipment. The sleek black design adds a professional touch to your setup. Ideal for optimizing network performance and reducing signal strength where necessary, this attenuator is a must-have for any network engineer.

## Long description

The BlueOptics SFA21XK6 LC 6dB Black attenuator is a fixed optical attenuator designed for multimode 50/125 µm fiber links operating at 850 nm. Fitted with an LC/UPC simplex connector and a zirconia ceramic ferrule, it provides a controlled 6 dB reduction of optical power to prevent receiver overload on short links or high-power transmitters. The compact black housing and LSZH outer jacket are intended for professional networking environments and help minimise smoke and toxic gas emission in the event of a fire.
Advantages
This attenuator delivers a stable, low insertion loss and high return loss performance specific to a 6 dB attenuation level, with components sourced from established manufacturers. The LC/UPC connector and ceramic ferrule ensure consistent mating reliability and long life, supporting many mating cycles. Devices are factory-tested with interferometer and OTDR measurements and supplied with a measurement protocol for input and return loss.
Suitable for
Multimode 50/125 µm fiber links at 850 nm
Short-distance links where transmitter power must be reduced to match receiver sensitivity
Data center patch panels and network equipment with LC/UPC ports
Industrial or commercial installations requiring LSZH cabling materials
Key specifications
Attenuation: 6 dB fixed
Connector type: LC/UPC simplex
Fiber type compatibility: multimode 50/125 µm (850 nm)
Ferrule material: zirconia ceramic
Operating temperature range: -40 °C to +75 °C
Outer jacket: LSZH (low smoke, zero halogen)
Tested by: interferometer and OTDR; measurement protocol included
How to use
Insert the LC/UPC connector of the attenuator into the LC port of the transmitting or receiving device, ensuring correct alignment and secure mating. The attenuator is simplex – it must be placed in the optical path on the appropriate fiber strand. Clean both connector end faces before installation to avoid increased insertion loss. After installation, verify link performance using appropriate optical power meters or test equipment to confirm the 6 dB reduction and acceptable return loss.
Usage recommendations
Maintain clean connector end faces and avoid excessive bending of the fiber near the attenuator. Store and handle the attenuator in a dry, dust-free environment. For repeated mating cycles, inspect connectors periodically and replace if the ferrule or housing shows wear that could affect performance.

## Specifications

| Feature | Value |
|---|---|
| Connector(s) | LC |
| Product colour | Black |
| Temperature range (T-T) | -40 - 75 |
| Attenuation | 6 dB |
| Sustainability compliance | Yes |
| Warranty period | 25 year(s) |
| Compliance certificates | RoHS |

## FAQ

### How much does the Attenuator BlueOptics SFA21XK6 cost, and is it available for purchase?

The price is 53.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 23.07.2026 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

## Image

https://aio.lv/img/cache/product/11262556/64084141_large.webp