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What is RJ45 Connector

RJ45 is a kind of information socket (that is, communication outlet) connector in the wiring system, the connector is composed of a plug (connector, crystal head) .RJ45 Standard network cable interfaces are widely available, RJ is the abbreviation of Registered Jack, meaning "registered socket". In the FCC (Federal Communications Commission Standards and Regulations), RJ describes the interface for public telecommunications networks
rj45 connector
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RJ45 is a kind of information socket (that is, communication outlet) connector in the wiring system, the connector is composed of a plug (connector, crystal head) .

RJ45 Standard network cable interfaces are widely available, RJ is the abbreviation of Registered Jack, meaning “registered socket”.  

In the FCC (Federal Communications Commission Standards and Regulations), RJ describes the interface for public telecommunications networks

1. RJ45 Connector Overview

The RJ45 connector, a type of Ethernet connector, is an electrical connector commonly used for network and telecommunications applications.

It is a standardized interface that transmits data, voice, and video signals over structured cabling systems, such as local area networks (LANs) and wide area networks (WANs).

rj45 connector

2. Structure Details

The RJ45 connector has a rectangular shape with 8 pins arranged in a specific pattern.

These pins establish a secure connection between the cable and the corresponding port or socket. Typically made of plastic or metal, the connector is durable and resistant to wear and tear.

rj45 connector

3. Application of RJ45 Connector

RJ45 connectors are crucial in various fields, including Ethernet, telephone, industrial control, and monitoring. Here are the main uses:

  • Ethernet Connection: Widely used in Ethernet networks to connect routers, switches, computers, and other devices, ensuring reliable data transmission.
  • Telephone Connections: Used in analog telephone lines to connect telephones to wall sockets.
  • Serial Communication: Employed in serial devices like industrial control systems and POS terminals for data transmission.
  • Power Supply: Devices supporting Power over Ethernet (PoE) can transmit data and power simultaneously through the RJ45 port.
  • Surveillance Systems: IP cameras and network video recorders (NVRs) in surveillance systems often use RJ45 interfaces.
  • Home Network: Connects routers, TV set-top boxes, game consoles, and other devices in home networks.

4. Types of RJ45 Connectors

Different types of RJ45 connectors cater to various scenarios and applications. Here are the main types:

  • Standard Type: The most common type, used for Ethernet and telephone lines. It has 8 pins and you can found it in routers, switches, and computers.
  • Shielded RJ45 Connector (STP/FTP): Features a shielding layer to prevent electromagnetic interference, improving data transmission reliability. Used in industrial Ethernet and professional audio/video equipment.
  • Straight-Through RJ45 Connector: The wire sequence is straight-through (1-1, 2-2, etc.), suitable for connecting network devices like switches and routers.
  • Cross T: The wire sequence is crossed (1-3, 2-6, etc.), used for connecting two devices of the same type, such as computer to computer.
  • PoE RJ45 Connector: Supports Power over Ethernet (PoE), transmitting data and power over the same cable. Common in surveillance cameras and wireless APs.
  • Industrial Grade RJ45 Connector: Designed for rugged environments with higher water and dust resistance, used in industrial Ethernet applications.

5. How to install RJ45 Connector

If you want to know more product information and solutions, contact Fibconet for more informations.

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