# Attenuator BlueOptics SFA21XK8 LC 8dB Silver

**URL:** https://aio.lv/en/product--blueoptics-sfa21xk8--11262554
**Data updated:** 2026-03-07 19:55 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA21XK8
**EAN:** 4063232230337
**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-sfa21xk8--11262554

## 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 SFA21XK8 attenuator provides 8 dB attenuation, ideal for optimizing signal strength in fiber optic networks. With LC connectors and a sleek silver finish, it ensures reliable performance and durability. Perfect for various applications in telecommunications and data centers.

## Long description

The BlueOptics SFA21XK8 LC 8dB Silver attenuator provides 8 dB attenuation for multimode fiber links (50/125 µm) at 850 nm. Designed with an LC/UPC simplex connector and a ceramic ferrule, this inline optical attenuator reduces optical power to the required level for receivers on short-distance fibre runs and in environments where excessive transmission power can overload components. The unit is supplied in a silver housing and is suitable for telecommunications, data centre and laboratory use where controlled signal levels are required.
Advantages
The attenuator offers a precise 8 dB attenuation with low insertion loss and high return loss thanks to its polished LC/UPC connector and ceramic ferrule. Manufactured using branded optical fiber and quality connector components, it is tested with interferometer and OTDR to provide documented input loss and return loss values. The flame-retardant LSZH housing reduces smoke and eliminates halogen emissions, while the design meets common industry standards and Telcordia GR-326-Core 4.4 requirements.
Suitable for
Multimode (50/125 µm) fibre links at 850 nm
Short-distance links where transmitter power must be reduced
Data centre and telecom patch panels with LC connectors
Laboratory test setups and optical bench configurations
Key specifications
Attenuation: 8 dB
Connector type: LC/UPC simplex
Fiber type: Multimode 50/125 µm (optimized at 850 nm)
Ferrule material: Zirconia ceramic
Housing finish: Silver
Operating temperature range: -40 °C to +75 °C
Jacket material: Low Smoke Zero Halogen (LSZH)
Tested with: Interferometer and OTDR; measurement protocol included
How to use
Install the BlueOptics LC 8 dB attenuator inline between the transmitter and the receiver using the LC connector. Ensure connectors are clean and free of dust before mating to minimize return loss and insertion loss. Insert the attenuator into the patch cord or patch panel port until the connector latches; no special tools are required. Verify optical power at the receiver after installation and compare with expected levels using an optical power meter. Keep the included measurement protocol for reference.
Usage recommendations
For reliable operation, clean connector endfaces with appropriate fiber cleaning tools before each connection and avoid excessive bending of the fibre near the attenuator. Use the 8 dB attenuation value when required to prevent receiver saturation; for different attenuation requirements choose the appropriate rated attenuator. Store and handle the attenuator in a dry environment and avoid exposure to mechanical shock beyond normal handling.

## Specifications

| Feature | Value |
|---|---|
| Connector(s) | LC |
| Product colour | Silver |
| Temperature range (T-T) | -40 - 75 |
| Attenuation | 8 dB |
| Sustainability compliance | Yes |
| Warranty period | 25 year(s) |
| Compliance certificates | RoHS |

## FAQ

### How much does the Attenuator BlueOptics SFA21XK8 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 — 46 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/11262554/64084139_large.webp