# Fibre Optic Adapter BlueOptics SFA21BK1 LC Connector Blue

**URL:** https://aio.lv/en/product--blueoptics-sfa21bk1--4467295
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA21BK1
**EAN:** 4063232044545
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.99 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 24.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfa21bk1--4467295

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.89 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFA21BK1 is a fibre optic adapter featuring an LC connector in blue color. It is compliant with RoHS standards, ensuring environmental safety. This product is ideal for connecting fibre optic cables in various networking applications, providing reliable and efficient data transmission.

## Long description

The BlueOptics SFA21BK1 LC Connector Blue is a single-mode fibre optic attenuator with an LC/PC simplex connector and a blue housing. Designed for single-mode 9/125 µm fibres (G.652.D) and specified for wavelengths from 1270 nm to 1610 nm, this attenuator provides a fixed 1 dB attenuation to reduce optical power where required. The product uses a zirconia ceramic ferrule for reliable mating and is RoHS compliant. It is suitable for short-distance links and installations where excessive input power must be lowered to avoid receiver overload. Each unit is tested after production and shipped with a measurement protocol documenting input loss and return loss.
Advantages
The BlueOptics SFA21BK1 offers a stable and predictable 1 dB attenuation with low input loss and high return loss. Its LC/PC connector and high-quality ceramic ferrule ensure consistent mating durability and low back-reflection. Manufacturing uses branded optical fibre and connectors, and finished units are verified with interferometer and OTDR testing. The attenuator is rated for wide operating temperatures and features an LSZH jacket for reduced smoke and no halogen release in case of fire.
Suitable for
 Reducing optical signal power in single-mode fibre links
 Preventing receiver saturation on short-distance connections
 Laboratory testing and optical power management
 Telecommunications and data centre patch panels using LC connectors
Key specifications
 Connector type: LC/PC simplex
 Fiber type: Single-mode (9/125 µm), G.652.D
 Nominal attenuation: 1 dB
 Operating wavelength range: 1270–1610 nm
 Ferrule material: Zirconia ceramic
 Operating temperature range: -40 °C to +75 °C
 Jacket: LSZH (low smoke, zero halogen)
 Tested with interferometer and OTDR; measurement protocol included
How to use
Insert the LC/PC connector into an LC adapter or port, ensuring correct alignment and a clean connector end-face before mating. Use this fixed 1 dB attenuator inline between the transmitting fibre and the receiver or patch panel to reduce optical power. Avoid excessive dust and contamination by keeping protective caps on when the attenuator is not in use and clean connectors with appropriate fibre cleaning tools if needed. Do not exceed the specified operating temperature range and avoid mechanical stress on the fibre and connector.
Usage recommendations
Confirm the required attenuation level for your installation before fitting the attenuator; for higher attenuation needs, select the appropriate staged attenuator. Regularly inspect and clean connector end-faces to maintain low insertion loss and high return loss. Store unused attenuators in protective packaging to preserve the ferrule and connector integrity.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Blue |
| Connector type | LC |
| Number of connectors | 1 |
| Quantity per pack | 1 pc(s) |
| Compliance certificates | RoHS |

## FAQ

### How much does the Fibre Optic Adapter BlueOptics SFA21BK1 cost, and is it available for purchase?

The price is 29.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 70 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 31.07.2026 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/4467295/64294736_large.webp