# NET TRANSCEIVER 1.25GB/S SFP/20KM BIDI PR4LC21K TELTONIKA

**URL:** https://aio.lv/en/product--teltonika-pr4lc21k--11668350
**Data updated:** 2026-01-08 10:40 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** Teltonika Networks
**Manufacturer code:** PR4LC21K
**EAN:** 4779051843367
**Warranty:** 1 Year
**Availability:** Available for order
**Price:** 59.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 49.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--teltonika-pr4lc21k--11668350

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

TELTONIKA PR4LC21K is an SFP optical transceiver supporting 1.25 Gb/s data rate with BiDi (bidirectional) operation and a reach of up to 20 km. Designed for fibre links in network equipment with SFP ports, it enables single-fiber transmission using complementary wavelengths. Suitable for switches, media converters and routers to extend network connections over long distances.

## Long description

TELTONIKA PR4LC21K is an SFP optical transceiver that supports a 1.25 Gb/s data rate and bidirectional (BiDi) operation over a single fibre with a maximum reach of 20 km. The module is intended for use in network equipment with SFP ports and enables single-fiber links by using complementary transmit and receive wavelengths.
Advantages
The NET TRANSCEIVER 1.25GB/S SFP/20KM BIDI PR4LC21K provides compact SFP form factor compatibility, single-fibre BiDi transmission to reduce cabling, and a 20 km reach suitable for metro and access networks. It is interoperable with switches, routers and media converters that accept standard SFP optics.
Suitable for
Extending Ethernet links between buildings or sites up to 20 km
Connecting switches, routers and media converters with SFP slots
Single-fibre installations where reducing fiber count is required
Key specifications
Data rate: 1.25 Gb/s
Form factor: SFP (Small Form-factor Pluggable)
Reach: up to 20 km
Operation: BiDi (bidirectional) over single fibre
Model / MPN: PR4LC21K
Brand: TELTONIKA
EAN: 4779051843367
How to use
Insert the SFP transceiver into an SFP port on the switch, router or media converter until it clicks into place. Connect the single-mode fibre patch cable using the appropriate connectors and ensure the complementary BiDi module (opposite wavelength) is installed at the remote end. Verify link status on both devices and configure network settings as required.
Usage recommendations
Use single-mode fibre for links up to 20 km, match the BiDi wavelengths between endpoints, avoid bending the fibre sharply, and ensure equipment supports standard SFP modules. Store and handle the transceiver with dust caps installed when not in use.

## FAQ

### How much does the SFP Transceiver TELTONIKA PR4LC21K 1.25 Gb/s 20 km cost, and is it available for purchase?

The price is 59.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 34 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 15.07.2026 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 Teltonika Networks 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 Teltonika Networks 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/11668350/66980103_large.webp