# Adapter single-mode TST AD-4LC/4LC — fiber optic simplex LC to LC coupling

**URL:** https://aio.lv/en/product--tst-ad-4lc4lc--12005352
**Data updated:** 2026-03-11 20:39 (EET)
**Category:** Network Equipment Accessories
**Manufacturer:** TST
**Manufacturer code:** AD-4LC/4LC
**EAN:** 5907647087171
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tst-ad-4lc4lc--12005352

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Single-mode fiber optic adapter TST AD-4LC/4LC provides a passive LC-to-LC coupling for single-mode (9/125 µm) fibers. Designed to join two LC connectors with low insertion loss and stable physical alignment, it is suitable for patch panels, wall outlets and fiber distribution boxes in telecom and data networks. Compact form factor for rack or field installations.

## Long description

The TST AD-4LC/4LC single-mode fiber optic adapter provides a passive LC-to-LC coupling for 9/125 µm single-mode fibers. It is engineered to align two LC connectors precisely, enabling low insertion loss and stable optical performance. The adapter's compact form factor is suitable for installation in patch panels, wall outlets and fiber distribution boxes used in telecommunications and data networks.
Advantages
The adapter ensures reliable physical alignment of LC ferrules for consistent signal transmission and minimal back reflection. Its single-mode design supports standard 9/125 µm optical fibers and offers a compact footprint for dense installations. The passive construction requires no power and offers compatibility with common LC-terminated fiber cords and devices, making it a practical component for both rack-mounted and field deployments.
Suitable for
 Connecting two single-mode LC patch cords in patch panels
 Termination points in wall outlets and faceplates
 Fiber distribution boxes and splice enclosures
 Telecom links, backbone and access network segments
 Data center fiber interconnects and equipment cabling
Key specifications
 Fiber type: single-mode (9/125 µm)
 Connector style: LC to LC simplex coupling
 Operation: passive, no power required
 Form factor: compact adapter suitable for patch panels and outlets
 Performance: low insertion loss and stable mechanical alignment
How to use
Insert one LC connector from a single-mode patch cord into each side of the adapter until the connectors click or seat securely. Ensure connectors and adapter ports are clean and free from dust before mating to maintain low insertion loss and protect fiber endfaces. The adapter can be installed into compatible panel cutouts or mounted within a distribution box according to the enclosure's mounting provisions.
Usage recommendations
 Clean connector endfaces with appropriate fiber cleaning tools before insertion and inspect using a fiber scope when possible. Avoid excessive mechanical stress on connected fiber cords and maintain bend radius limits for single-mode fiber to preserve optical performance and prolong component lifetime.

## FAQ

### How much does the Single-mode fiber adapter TST AD-4LC/4LC cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 68 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 02.07.2026 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, Bank cards on-line, Apple Pay, Google Pay. 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 TST 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 TST 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/12005352/67460791_large.webp