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header-product DIGITUS DN-82121-1 Gigabit Media Converter RJ45 to SC Single-mode 1000 Mbit/s 1310 nm 20km
56.49 €

DIGITUS DN-82121-1 Gigabit Media Converter RJ45 to SC Single-mode 1000 Mbit/s 1310 nm 20km

DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 1
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DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 8
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 9
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 10
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 1
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 2
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 3
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 4
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 5
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DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 8
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 9
DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC Photo 10

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DIGITUS DN-82121-1 Gigabit Media Converter RJ45 to SC Single-mode 1000 Mbit/s 1310 nm 20km

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Short description

DIGITUS DN-82121-1 Gigabit Media Converter with RJ45 and SC interfaces designed for single-mode fiber optic networks. It provides a maximum data transfer rate of 1000 Mbit/s, operating at a wavelength of 1310 nm over a distance of up to 20000 meters. Ideal for extending Ethernet networks over long distances with reliable wired connectivity, featuring clear LED status indicators and a durable black metal housing.
Available at price 56.49 €: 2 pcs.
Total available for order: 297 pcs.
Warranty: 2 Years
Stāvoklis: Open box

Open Box - A completely new device without any defects. Opened packaging.

SKU: 302485
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
13.11.2026 {{selectedOffer.officeDeliveryString}}
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19.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.45 kg)
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From 1.99 €
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Available for private customers at price 80.99 €: 41 pcs.
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Product information

Description

The DIGITUS DN-82121-1 Gigabit Media Converter RJ45 to SC Single-mode is designed to bridge copper and fiber optic network infrastructures seamlessly. This device enables the conversion of wire-based network media to fiber optic, allowing reliable data transmission over extended distances. Featuring a durable black metal housing, clear status LED indicators, and an external power supply, it offers dependable performance for various networking environments. Network signals are transmitted efficiently at a maximum data transfer rate of 1000 Mbit/s using a 1310 nm wavelength, making it a robust solution for expanding traditional Ethernet networks without requiring a complete infrastructure replacement.

Advantages

This media converter provides a dependable way to migrate and extend copper network signals over long distances using single-mode fiber technology. It ensures high transmission quality and operational reliability while supporting high-speed data rates up to 1000 Mbit/s. The unit features automatic cable detection with auto MDI and MDI-X functions alongside auto-negotiation of full and half-duplex modes to simplify setup and ensure stable connectivity. Built with diagnostic and monitoring LEDs, it allows administrators to quickly check power, link, and activity statuses. The compact and sturdy metal housing ensures longevity and reliable operation across standard temperature ranges.

Suitable for

  • Extending Ethernet networks across long distances up to 20 kilometers
  • Migrating copper-based network setups to single-mode fiber optic cabling
  • Connecting remote buildings or network segments within a campus or industrial site
  • Enterprise and office environments requiring reliable wired gigabit connectivity

When it may not be suitable

This device is not designed for multi-mode fiber optic cables, as it is strictly built for single-mode fiber infrastructure. It may also not be suitable for environments requiring speeds exceeding 1000 Mbit/s or applications where wireless network distribution is preferred over wired solutions.

Key specifications

  • Maximum data transfer rate: 1000 Mbit/s
  • Maximum transfer distance: 20000 m
  • Wavelength: 1310 nm
  • Fiber mode structure: Single-mode
  • Fiber optic connector: SC
  • Network ports: 1x RJ45, 1x SC duplex
  • Supported standards: IEEE 802.3, IEEE 802.3u, IEEE 802.3z
  • Input voltage: 5 V DC
  • Color: Black

How to use

To use the media converter, connect the RJ45 port to your copper-based network device such as a switch or router using a standard Ethernet cable. Insert the single-mode fiber optic cable with an SC connector into the designated fiber port. Connect the provided external power supply to the input voltage jack and plug it into a standard electrical outlet. The built-in auto-negotiation and auto-cabling detection will automatically configure the link parameters, allowing the status LED indicators to display power, link, and activity states once the connection is successfully established.

What to consider before purchase

  • Verify that your existing or planned fiber optic cabling is single-mode with an SC connector
  • Confirm that the required transmission distance does not exceed 20 kilometers
  • Check that your network equipment operates at gigabit speeds compatible with the device
  • Ensure an available power outlet near the installation site for the external power supply
Usage recommendations: Install the media converter in a well-ventilated indoor environment within the specified operating temperature range of 0 to 60 degrees Celsius. Ensure that fiber optic connectors are clean and free of dust before plugging them in to maintain optimal signal quality and prevent transmission loss.

Specifications

Internal: The product is built in.
No
Wavelength: The distance over which a wave repeats itself. The wavelength determines the characteristics of the wave e.g. red light has a different wavelength to blue light.
1310 nm
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
20000 m
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
1000 Mbit/s
Fiber optic connector: This terminates the end of an optical fiber, and enables quicker connection and disconnection than splicing. The connectors mechanically couple and align the cores of fibers so light can pass. Better connectors lose very little light due to reflection or misalignment of the fibers. In all there have been about 100 types of optic fiber connectors produced.
SC
All features

Other features

Connector(s):
RJ45 - SC
Transmission distance (max):
10 km

Logistics data

UK Trade Tariff code:
85176200
Country of origin: Country where the device is made. Aka Country of manufacture (COM).
China
Harmonized System (HS) code:
85176990

Certificates

Certification:
FCC, CE.

Packaging data

Package weight: Weight of the packaged product.
450 g
Package volume:
2086.56 cm³
Package height: The distance from the top to the bottom of the packaging.
161 mm
Package depth: The distance from the front to the back of the packaging.
60 mm
Package width: The distance from one side of the packaging to the other.
216 mm

Operational conditions

Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
0 - 60

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.2 kg
Height: The measurement of the product from head to foot or from base to top.
26 mm
Depth: The distance from the front to the back of something.
95 mm
Width: The measurement or extent of something from side to side.
70 mm

Power

External power adapter:
Yes
Power over Ethernet (PoE): The device supports Power over Ethernet (PoE), which is one of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras.
No
Input voltage: The voltage (V) which is required to power the product.
5

Ports & interfaces

DC-in jack: The socket/plug where the DC electricity supply connects to the device.
Yes
RJ-11 ports quantity:
0
Fiber optic connector: This terminates the end of an optical fiber, and enables quicker connection and disconnection than splicing. The connectors mechanically couple and align the cores of fibers so light can pass. Better connectors lose very little light due to reflection or misalignment of the fibers. In all there have been about 100 types of optic fiber connectors produced.
SC
Fiber ports quantity: The number of sockets (ports) for fibers (cables).
1
Ethernet LAN (RJ-45) ports: Number of Ethernet LAN (RJ-45) ports (connecting interfaces) in the device. Ethernet LAN (RJ-45) ports allow a computer to connect to the ethernet.
1
Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.
Wired

Features

LED indicators:
Status, Link, Activity
Product colour: The colour e.g. red, blue, green, black, white.
Black
Internal: The product is built in.
No

Performance

Buffer size: The buffer is a temporary memory area in which data is stored while it is being processed or transferred, especially one used while streaming video or downloading audio. The buffer size is usually measured in MB (megabytes) or KB (kilobytes).
2048 KB
Rx power (min):
-21 dBmW
Tx power (max):
-6 dBmW
Tx power (min):
-12 dBmW
Fiber cable diameters supported (core/cladding):
9/125
Fiber mode structure:
Single-mode
Wavelength: The distance over which a wave repeats itself. The wavelength determines the characteristics of the wave e.g. red light has a different wavelength to blue light.
1310 nm
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
20000 m

Network

Duplex system: A duplex communication system is a point-to-point system composed of two connected parties or devices that can communicate with one another in both directions, simultaneously.
Half, Full
Auto MDI/MDI-X: A Medium Dependent Interface (MDI) describes the interface (both physical and electrical) in a computer network from a physical layer implementation to the physical medium used to carry the transmission. Ethernet over twisted pair also defines a medium dependent interface crossover (MDIX) interface. Auto-MDIX ports on newer network interfaces detect if the connection would require a crossover, and automatically chooses the MDI or MDIX configuration to properly match the other end of the link.
Yes
Ethernet LAN data rates: The different speed levels of the Ethernet LAN connection.
1000, 100, 10
Ethernet interface type:
Gigabit Ethernet
Networking standards: The way in which the network is working, e.g. IEEE 802.11a, IEEE 802.11b, IEEE 802.11g.
IEEE 802.3z, IEEE 802.3u, IEEE 802.3
Converter output interface:
1000Base-LX
Converter input interface: A convertor changes one form of signal into another e.g. A/D Converter changes a signal from analog to digital. A convertor input interface is the place where a convertor connects to the product in order to input the converted signal.
100Base-TX, 1000Base-TX
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
1000 Mbit/s

Description

Machine translation.

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Product comparison

The DIGITUS DN-82121-1 Gigabit Media Converter RJ45 to SC Single-mode 1000 Mbit/s 1310 nm 20km is compared against several alternative Digitus models, including industrial, bidirectional, PoE, and Fast Ethernet variants. All compared products share the same SC optical connector and support single-mode fiber transmissions up to 20 km, but they differ in data rates, power options, wavelengths, and operational use cases.

⚙️ The table below compares characteristics such as maximum data transfer rate, operating wavelength, power supply type, and design features that determine the suitability of each device for different networking environments.

Comparison parameterDIGITUS DN-82121-1Digitus Industrial Gigabit Media ConverterDigitus DN-82122 BidirectionalFast Ethernet Media Converter DN-82021-1Digitus Bidirectional Gigabit (DN-82123)Digitus Gigabit PoE media converter (DN-82160)Practical conclusion
Data rate1000 Mbit/s1000 Mbit/s1000 Mbit/sNot specified (Fast Ethernet)1000 Mbit/s1000 Mbit/sMost models deliver gigabit speeds, except the Fast Ethernet version, which is built for slower legacy networks.
Wavelength1310 nm1310 nm1310 nm1310 nm1550 nm1310 nmThe DN-82123 model operates at a 1550 nm wavelength, which must be accounted for in bidirectional pairings.
Distance20000 m20000 m20000 m20000 m20000 m20000 mAll units support long-distance links of up to 20 kilometers.
InterfacesRJ45 to SCRJ45, SCRJ45 to SCRJ45 to SCRJ45 to SCRJ45 to SCConsistent interface standards ensure easy integration with existing cabling.
Key featuresStandard metal housingIndustrial grade (12-48 V)Bidirectional transmissionLow power consumption (5V)Bidirectional transmission30 W PoE budgetSpecialized versions offer expanded input voltage, device power delivery over Ethernet, or bidirectional communication.

◎ The table below evaluates how each product matches different user needs, network scenarios, and deployment environments.

Use caseRecommended productWhy
Standard office gigabit network extensionDIGITUS DN-82121-1Ideal for straightforward, high-speed bridging between copper and fiber segments without paying for specialized features.
Deployment in demanding industrial settingsDigitus Industrial Gigabit Media ConverterFeatures robust housing and a wide input voltage range for factory floors or harsh environments.
Powering remote network gear over cablesDigitus Gigabit PoE media converter (DN-82160)Provides a 30 W PoE budget to power access points or security cameras without an extra power source.
Maximizing fiber utilization with limited strandsDigitus DN-82122 BidirectionalEnables bidirectional communication to make the most of available optical infrastructure.

The DIGITUS DN-82121-1 Gigabit Media Converter RJ45 to SC Single-mode 1000 Mbit/s 1310 nm 20km is a well-rounded solution for standard gigabit network extensions over single-mode fiber up to 20 km. Unlike industrial or PoE alternatives, this model focuses on typical office or professional IT environments where specialized power inputs or device powering are unnecessary. Choose this media converter if you need reliable, straightforward gigabit connectivity without paying for extra features you will not use.

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Stock data
Warehouse Stock Delivery to the store Store Price
EU3 41 30.10.2026 Best delivery
80.99 €
WH94 41 30.10.2026 Best delivery
82.49 €
WH355 2 30.10.2026 Best delivery
88.99 €
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80.49 €
EU4 166 13.11.2026
80.99 €
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80.99 €
Stock: 41
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82.49 €
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88.99 €
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Warehouse: WH109
80.99 €
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81.99 €
Stock: 2
Delivery Date: 30.10.2026 Best delivery
Warehouse: EU9

Customer reviews

Customer questions

FAQ

How much does the DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC cost, and is it available for purchase?

The price is 56.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 297 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 13.11.2026 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: Cash payment, 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 DIGITUS 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 DIGITUS 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: internal, wavelength, maximum transfer distance, maximum data transfer rate, fiber optic connector, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for DIGITUS DN-82121-1 Gigabit Media Converter RJ45/SC?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
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