# Attenuator BlueOptics SFA21XK2 LC 2dB Silver

**URL:** https://aio.lv/en/product--blueoptics-sfa21xk2--11186861
**Data updated:** 2026-03-07 18:18 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA21XK2
**EAN:** 4063232230276
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.49 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 41.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfa21xk2--11186861

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFA21XK2 attenuator provides a reliable solution for signal attenuation with a 2 dB loss. It features LC connectors and a sleek silver design, making it suitable for various networking applications. Ideal for optimizing network performance and ensuring signal integrity, this attenuator is a must-have for professionals in the field.

## Long description

The BlueOptics SFA21XK2 LC 2dB Silver attenuator is a compact inline device designed to reduce optical signal power by 2 dB in multimode (50/125 µm) fiber links at 850 nm. Fitted with an LC/UPC simplex connector and a zirconia ceramic ferrule, the attenuator supports reliable mating cycles and low insertion loss while maintaining high return loss. Its silver housing and LSZH jacket make it suitable for installations where space, signal integrity and safety standards are important. Each unit is factory-tested with interferometry and OTDR and is supplied with measured insertion loss and return loss values.
Advantages
This attenuator provides precise 2 dB attenuation to prevent receiver saturation on short or high-power multimode links. Use of high-quality branded fiber and manufacturer-grade connectors ensures stable performance, low insertion loss and extended mechanical life up to the rated mating cycles. The LSZH jacket and compliance with common industry standards reduce smoke and halogen emissions in case of fire while meeting relevant safety norms. Factory testing and a supplied measurement report provide traceability and predictable optical behaviour.
Suitable for
Multimode fiber links (50/125 µm) operating at 850 nm
Short-distance installations where transmitter power is high relative to receiver sensitivity
Patch panels, fiber patch cords and rack-mounted network equipment using LC/UPC connectors
Environments requiring low-smoke, zero-halogen (LSZH) cabling
Key specifications
Nominal attenuation: 2 dB
Connector type: LC/UPC simplex
Fiber type: Multimode 50/125 µm
Operating wavelength: 850 nm
Ferrule material: Zirconia ceramic
Temperature range: -40 °C to +75 °C
Jacket: LSZH (low smoke, zero halogen)
Tested with interferometer and OTDR; measurement report included
How to use
Install the attenuator by inserting the LC simplex connector into the LC receptacle of the transmitter or receiver patchcord as required to achieve the desired power reduction. Ensure connectors are clean and free of dust before mating; use appropriate fiber cleaning tools to avoid contaminating ferrules. After connection, verify link performance and confirm the reduced optical power at the receiver with test equipment if available. Handle the attenuator by the connector body and avoid excessive bending of the fiber or tensile stress on the joint.
Usage recommendations
For consistent results, clean both mating connectors before insertion and check the link with an optical power meter after installing the attenuator. Avoid repeated unnecessary mating cycles to preserve ferrule lifespan, and store unused units in protective caps when not fitted.

## Specifications

| Feature | Value |
|---|---|
| Connector(s) | LC |
| Product colour | Silver |
| Temperature range (T-T) | -40 - 75 |
| Attenuation | 2 dB |
| Sustainability compliance | Yes |
| Warranty period | 25 year(s) |
| Compliance certificates | RoHS |

## FAQ

### How much does the Attenuator BlueOptics SFA21XK2 cost, and is it available for purchase?

The price is 50.49 € (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 10.08.2026 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

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