# Optical Attenuator CBO SFA22BK25 Singlemode 25 dB

**URL:** https://aio.lv/en/product--blueoptics-sfa22bk25--4467316
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** SFA22BK25
**EAN:** 4063232044897
**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-sfa22bk25--4467316

## 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 SFA22BK25 is a singlemode optical attenuator with 25 dB attenuation designed to reduce signal power in fiber optic links. Suitable for laboratory and field use, it helps prevent receiver saturation, perform link testing and balance power levels. Compact inline design allows easy insertion into singlemode fiber networks with standard connectors.

## Long description

The BlueOptics Optical Attenuator CBO SFA22BK25 Singlemode 25 dB is an inline singlemode attenuator that reduces optical signal power by 25 dB. Designed for use in laboratory environments and field deployments, this compact attenuator integrates into standard singlemode fiber links with common connector types. It provides controlled attenuation to prevent receiver saturation, enable accurate link testing and help balance optical power between network segments.
Advantages
The attenuator delivers a fixed, stable 25 dB attenuation value with minimal insertion loss and low back reflection, supporting consistent test results and predictable performance when adjusting power levels. Its compact, inline form factor simplifies installation in patch panels, test setups or field assemblies without requiring special adapters. The device is compatible with typical singlemode fiber connectors and is built to maintain signal integrity across a wide range of optical wavelengths used in telecommunications and testing.
Suitable for
 Preventing receiver overload and saturation in singlemode fiber links
 Optical link testing and power margin measurements in labs and field sites
 Balancing power levels between transmitters and receivers
 Temporary insertion during commissioning, maintenance or troubleshooting
Key specifications
 Attenuation: fixed 25 dB
 Fiber type: singlemode
 Form factor: inline attenuator
 Connector compatibility: standard singlemode connectors (industry standard types)
 Typical return loss: low back reflection suitable for test and telecom use
 Application wavelengths: compatible with common singlemode telecom/test wavelengths
How to use
Insert the attenuator inline between the transmitting and receiving fiber connectors, ensuring clean connector end-faces before mating. Align connector types and securely couple the attenuator to the existing fiber patch cords or equipment ports. Once installed, verify optical power levels with a power meter or test instrument to confirm the expected 25 dB reduction. For repeated use, keep connectors covered when not in use and clean them according to standard fiber optic handling procedures.
Usage recommendations
Use appropriate connector cleaning tools and dust caps to preserve performance. Verify compatibility of connector types and optical wavelength with your equipment before insertion. When performing measurements, allow for connector mating variability by taking multiple readings and using calibrated test instruments.

## FAQ

### How much does the Optical Attenuator CBO SFA22BK25 25 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 — 4 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/4467316/59859868_large.webp