# Fibre optic adapter EFB Elektronik B71921L12 LC single-mode, Blue/Grey, 483×244×44.5 mm, 1 pc

**URL:** https://aio.lv/en/product--efb-elektronik-b71921l12--4804926
**Data updated:** 2026-01-13 21:26 (EET)
**Category:** Network Equipment Accessories
**Manufacturer:** EFB Elektronik
**Manufacturer code:** B71921L12
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 87.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 72.72 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--efb-elektronik-b71921l12--4804926

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

EFB Elektronik B71921L12 is a single-mode fibre optic adapter with LC connector type, supplied in blue and grey. The unit measures 483 × 244 × 44.5 mm and is sold as 1 piece per pack. Designed for single-mode fibre links, it enables secure LC connections for telecommunications, data centres and network equipment where compact, colour-coded adapters are required.

## Long description

EFB Elektronik B71921L12 is a single-mode fibre optic adapter with LC connector interfaces in blue and grey finish, supplied as a single unit measuring 483 × 244 × 44.5 mm. Designed to provide reliable mating of LC single-mode connectors, this adapter is suitable for installation in rack-mounted panels or splice trays where compact, colour-coded adapters help organise fibre links. The adapter supports precise alignment of fibre ferrules to minimise insertion loss and maintain link performance in telecommunications and data-centre environments.
Advantages
The adapter offers precise LC-to-LC alignment for single-mode fibres, a compact form factor compatible with standard panel layouts and visible colour coding to simplify port identification. Its measured dimensions allow integration into equipment racks and fibre distribution frames while maintaining low insertion loss and stable mechanical connection between LC connectors. The product is supplied as one piece, suitable for incremental installation and replacement.
Suitable for
Single-mode fibre links in telecommunications networks
Data centre patching and fibre distribution panels
Network equipment and optical patch panels requiring LC connectors
Field or lab environments needing compact, colour-coded adapters
Key specifications
Connector type: LC (duplex compatible depending on mounting)
Fibre mode: single-mode
Body colour: blue and grey
External dimensions: 483 × 244 × 44.5 mm
Package quantity: 1 piece
How to use
Install the adapter into the appropriate slot of a patch panel or splice tray that accepts its dimensions, ensuring the orientation matches the panel cutout. Insert LC connectors until they click into place, taking care to keep connector endfaces clean and protected with dust caps until final mating. For removal, depress the LC latch and withdraw the connector straight out to avoid damaging ferrules. Perform optical power and return-loss checks after installation to confirm link integrity.
Usage recommendations
Use fibre cleaning tools and wipes to remove dust and contaminants before mating. Store unused adapters and connectors with dust caps fitted. For installations where traceability is required, use the blue/grey colour coding to mark single-mode paths and document port assignments in the network plan.

## Specifications

| Feature | Value |
|---|---|
| Height | 44.5 mm |
| Width | 483 mm |
| Depth | 244 mm |
| Product colour | Blue, Grey |
| Housing material | Metal |
| Connector type | LC |
| Fiber mode structure | Single-mode |
| Number of connectors | 12 |
| Category | OS2 |
| Duplex | Yes |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Fibre optic adapter EFB Elektronik B71921L12 LC cost, and is it available for purchase?

The price is 87.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 29.07.2026 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 EFB Elektronik 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 EFB Elektronik 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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