# Fibre optic adapter ST EFB Elektronik 53210.3

**URL:** https://aio.lv/en/product--efb-elektronik-532103--3214234
**Data updated:** 2026-01-07 09:55 (EET)
**Category:** Network Equipment Accessories
**Manufacturer:** EFB Elektronik
**Manufacturer code:** 53210.3
**EAN:** 4049759023409
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 12.99 €
**Prices and availability valid until:** 2026-08-13 23:59
**Price without VAT (21%):** 10.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--efb-elektronik-532103--3214234

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 11.08.2026 | free |
| Pickup points | 14.08.2026 | 1.89 EUR |
| Courier delivery to door | 14.08.2026 | 4.99 EUR |

## Summary description

The EFB Elektronik 53210.3 is a metallic ST fibre optic adapter designed for single-mode fiber applications. It ensures reliable connections and minimal signal loss, making it ideal for high-performance networking. Its robust design provides durability and stability in various environments, ensuring optimal performance in data transmission.

## Long description

The EFB Elektronik 53210.3 is a metallic ST singlemode fibre optic adapter designed to provide stable, low-loss connections for single-mode fibre networks. Compatible with standard ST connectors, this adapter supports reliable signal transmission and is suitable for rack, panel or wall-mounted installations where durable fibre connections are required.
Advantages
The metal housing offers mechanical robustness and improved shielding compared with plastic variants, reducing the risk of connector damage in active environments. As an ST singlemode adapter, it maintains low insertion loss and consistent alignment of fibre cores to support high-performance networking equipment. Its compact design simplifies installation in confined spaces and standardised dimensions ensure compatibility with common patch panels and enclosures.
Suitable for
Singlemode fibre patch panels and distribution frames
FTTx and long-distance singlemode links
Data centres and telecom installations requiring ST connectors
Field or rack-mounted fibre termination points
Key specifications
Brand: EFB Elektronik
Model / MPN: 53210.3
Connector type: ST
Fibre type: Singlemode
Housing: Metal
EAN: 4049759023409
How to use
Insert the ST connector ferrule into the adapter until it seats securely, ensuring correct orientation and firm engagement. Verify that connectors are clean before mating to avoid increased insertion loss; use appropriate fibre cleaning tools if necessary. Secure the adapter in the panel or chassis using the standard mounting method for the enclosure, then route and fix fibre cables to prevent strain on the connector.
Использование — рекомендации
Для поддержания минимальных потерь сигнала регулярно проверяйте чистоту коннекторов и избегайте сильного изгиба волокон вблизи адаптера. Используйте совместимые ST разъёмы и соблюдайте правила установки в соответствии с требованиями вашей сетевой инфраструктуры.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Metallic |
| Connector type | ST |
| Fiber mode structure | Single-mode |
| Number of connectors | 1 |
| Duplex | No |
| Ferrule material | Ceramic |

## FAQ

### How much does the Fibre optic adapter ST EFB Elektronik 53210.3 cost, and is it available for purchase?

The price is 12.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 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 11.08.2026 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 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

https://aio.lv/img/cache/product/3214234/64206938_large.webp