# Keystone coupler LC duplex MM/SM ACT TD4101

**URL:** https://aio.lv/en/product--act-td4101--4316931
**Data updated:** 2026-01-13 21:21 (EET)
**Category:** Fiber Optic Cables
**Manufacturer:** ACT
**Manufacturer code:** TD4101
**EAN:** 8716065470543
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--act-td4101--4316931

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The ACT Keystone coupler LC duplex MM/SM is designed for reliable connectivity in fiber optic networks. Its flat construction and blue/white color make it suitable for various installations. The LC connectors ensure high performance and compatibility with both multimode and singlemode fibers, providing flexibility for different applications. Ideal for data centers and telecommunications, this coupler offers durability and ease of use.

## Long description

The ACT Keystone coupler LC duplex MM/SM TD4101 provides a compact, panel-mountable interface for LC duplex fiber connections. Its flat keystone form factor and blue/white finish enable tidy installation in patch panels, wall plates and enclosures. The coupler accepts LC duplex plugs and supports both multimode and singlemode LC terminations, allowing integration with mixed fiber infrastructures while maintaining reliable optical alignment and low insertion loss.
Advantages
The keystone design offers tool-free snap-in installation into compatible housings and faceplates, reducing assembly time. LC duplex ports deliver high-density connectivity with precise ferrule alignment to minimize signal loss. The flat profile saves space in racks and outlet boxes, and the durable housing ensures stable mechanical retention for repeated insertions and removals. Color coding supports easy identification of connector type and fiber mode.
Suitable for
Data center patch panels and high-density racks
Telecommunications outlets and wall plates
Enterprise network cabinets and comms rooms
FTTx customer premises equipment and small enclosures
Mixed multimode and singlemode fiber deployments
Key specifications
Connector type: LC duplex
Supported fiber types: multimode and singlemode
Form factor: keystone, flat profile
Housing color: blue/white
Mounting: snap-in for keystone faceplates and panels
Density: dual-port (two fiber channels)
How to use
Install the keystone coupler by pressing it into a compatible keystone aperture in a panel or wall plate until it snaps into place. Insert LC duplex connectors from patch cords into the ports until a positive click indicates secure engagement. Ensure fiber connectors are clean before mating to avoid contamination that could affect optical performance. For removal, depress the retention tab and pull the coupler or connector straight out to avoid disturbing adjacent ports.
Usage recommendations
Use a fiber inspection scope and lint-free wipes with approved cleaning solution before mating connectors. Match multimode fibers with multimode equipment and singlemode fibers with singlemode equipment to maintain expected transmission characteristics. Store unused couplers and cables in protective caps or covers to prevent dust ingress when not in service.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Blue, White |
| Connector 1 | LC |
| Connector 2 | LC |
| Construction type | Flat |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Harmonized System (HS) code | 85369010 |

## FAQ

### How much does the Keystone coupler LC duplex MM/SM ACT TD4101 cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 14.07.2026 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 ACT 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 ACT 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/4316931/64274200_large.webp