# Optical attenuator CBO SFA24BK5 singlemode, fixed 5 dB attenuation, fiber optic inline

**URL:** https://aio.lv/en/product--blueoptics-sfa24bk5--4467334
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA24BK5
**EAN:** 4063232045443
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 24.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfa24bk5--4467334

## 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

CBO SFA24BK5 is a singlemode optical attenuator with fixed 5 dB attenuation for inline fiber optic connections. Designed to reduce optical signal power to prevent receiver overload or to match link budgets, it fits standard singlemode connectors and is suitable for testing, lab setups, and network installations. Provides stable attenuation without user adjustment.

## Long description

CBO SFA24BK5 is a singlemode optical attenuator with fixed 5 dB attenuation designed for inline fiber optic connections. It reduces optical signal power to prevent receiver overload and to help match link budgets in fiber networks. The attenuator is compatible with standard singlemode connectors and provides stable, passive performance without requiring user adjustment, making it suitable for testing, laboratory environments and permanent installations.
Advantages
The fixed 5 dB attenuation value delivers predictable signal reduction and repeatable results across installations. Its singlemode construction ensures low back reflection and maintains signal integrity for long-distance links. The inline, compact design allows easy integration into existing fiber runs and test setups without additional equipment. As a passive device it requires no power and provides long-term stability with minimal maintenance.
Suitable for
Preventing receiver saturation in optical links
Balancing power levels in point-to-point singlemode networks
Laboratory testing and measurement setups
Temporary or permanent inline insertion during installation and commissioning
Key specifications
Attenuation: fixed 5 dB
Fiber type: singlemode
Connection type: inline connector-compatible for standard singlemode interfaces
Operation: passive, no power required
Performance: low back reflection suitable for long-haul and metro links
How to use
Insert the attenuator inline between two compatible singlemode fiber connectors, ensuring connectors and ports are clean before mating. The device operates immediately upon insertion and requires no configuration. For temporary testing, connect it at the test point; for permanent installations, secure the inline connection according to standard cabling practices to avoid strain or contamination. Verify optical power levels with a power meter after insertion to confirm the expected 5 dB reduction.
Usage recommendations
Before connecting, clean fiber endfaces and inspect connectors to prevent contamination. Use an optical power meter to measure pre- and post-attenuation levels and confirm that the reduced signal meets receiver input specifications. Avoid exposing the attenuator to excessive mechanical stress, moisture, or extreme temperatures during installation and operation.

## FAQ

### How much does the Optical attenuator CBO SFA24BK5 5 dB 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 — 12 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/4467334/59859873_large.webp