RS232 Serial Extender - RS232 over CAT5 Cable up to 1000 Feet with Power Supply (EXT-RS232)

EXT-RS232

The Gefen EXT-RS232 serial extender provides reliable RS232 device extension up to 1000 feet (300 meters) over a single CAT-5 cable connection. This professional-grade RS232 extender allows you to relocate computers, control systems, and peripheral devices to secure, remote locations while maintaining full 9-pin RS-232 communication standards at data rates up to 115,200 baud. Perfect for digital signage applications, industrial automation, and remote device control, the EXT-RS232 extender includes both sender and receiver units with integrated power supply, delivering a complete plug-and-play solution for extending serial communication over standard Ethernet cabling infrastructure.

$269.85

Key Features

Extended Range Communication: Extends any RS232 compliant device up to 1000 feet (300 meters) from the computer using standard CAT-5e cabling infrastructure.

Complete RS-232 Standard Support: Supports the full 9-pin RS-232 communications standard with maximum data transmission rates up to 115,200 baud for reliable serial device connectivity.
 

Single Cable Solution: Only one CAT-5e cable needed for extension, simplifying installation and reducing cable management requirements.


Digital Signage Ready: Perfect for digital signage applications, allowing remote placement of display controllers and media players while maintaining reliable RS-232 control.


Power Over Cable: 5V DC power supply on sender unit provides power to both sender and receiver units through the CAT-5 connection cable.


Status LED Indicator: Red LED on receiver unit lights up to indicate successful transmission of power and RS-232 signals between sender and receiver units.

How It Works

The Gefen EXT-RS232 serial extender operates using a two-unit sender-receiver architecture for reliable RS232 extension over CAT-5 cabling. First, connect your computer or source device to the RS-232 input port on the sender unit using the supplied DB9 serial cable. Next, run a standard CAT-5, CAT-5e, or CAT-6 cable from the sender unit's RJ-45 port to the receiver unit's corresponding port - up to 1000 feet away. Then connect your RS-232 peripheral device (such as a graphics tablet, industrial controller, or digital signage player) to the receiver unit's RS-232 output port. Finally, plug the included 5V power supply into the sender unit, which automatically powers both units through the CAT-5 cable connection. The system instantly establishes a transparent serial communication link, with the receiver's LED indicator confirming successful signal transmission and power delivery between both units.

Additional Information

Specifications

Connectivity: 

  • RS232 Input Connector: DB-9 female
  • RS232 Output Connector: DB-9 male
  • Link Connector: RJ-45 Shielded

Performance:

  • Maximum Extension Distance: 1000 feet (300 meters)
  • Supported Standards: RS-232 9-pin communications standard
  • Maximum Data Transmission Rate: 115,200 baud
  • Cable Type: CAT-5, CAT-5e, or CAT-6

Power Requirements:

  • Power Supply: 5V DC @ 1A (max)
  • Power Consumption: 5 Watts (maximum)
  • Power Delivery: Power over CAT-5 cable to receiver unit

Physical Specifications:

  • Dimensions: 1.2" W x 3.8" D x 1.2" H (each unit)
  • Shipping Weight: 1 lbs (complete system)

Environmental:

  • Operating Temperature Range: +5 to +45°C
  • Operating Humidity Range: 5 to 65% RH, non-condensing
  • Storage Temperature Range: -20 to +70°C
  • Storage Humidity Range: 5 to 95% RH, non-condensing

UPC: 845344000015

System Requirements

Required Equipment:

  • Computer or device with available DB-9 RS-232 serial port 
  • RS-232 compatible peripheral device with DB-9 connector 
  • CAT-5, CAT-5e, or CAT-6 Ethernet cable (not included, up to 1000 feet) 
  • Standard AC power outlet for 5V DC power supply

Compatibility:

  • Supports any RS-232 compliant device with 9-pin configuration
  • Compatible with graphics tablets, industrial controllers, POS systems, and digital signage equipment
  • Works with all operating systems supporting RS-232 communication

Installation Requirements:

  • No drivers or software installation required
  • Plug-and-play operation
  • Access to both ends of cable run for unit placement

What's in the Box

  • (1) RS232 Extender Sender Unit 
  • (1) RS232 Extender Receiver Unit 
  • (1) 6-foot DB9 serial cable (Male to Female) 
  • (1) 5V external power supply with AC adapter
  • User manual and documentation

Warranty

2 Year Product Warranty

Please see the Gefen Warranty Page for more details.

Resources

Gefen EXT-RS232 Datasheet
Gefen EXT-RS232 Manual
Gefen EXT-RS232 Declaration of Conformity

Why Choose Gefen?

For over two decades, Gefen has been the trusted backbone for the world's most demanding AV installations. Our reputation is built on rock-solid reliability and interoperability. We design and test our products to exceed industry standards, ensuring they work seamlessly right out of the box and continue to perform for years. When AV professionals choose Gefen, they are choosing:

  • Engineered for Durability: Built with high-quality components for continuous, 24/7 operation.
  • Expert Support: Access to a team of experienced AV engineers to assist with system design and troubleshooting.
  • Simplified Integration: Solutions designed to work with standard infrastructure, reducing complexity and deployment time.

We provide the critical infrastructure that empowers you to build smarter, more resilient AV systems.

Build Your Next AV System with Confidence

Stop compromising on signal integrity. Whether you are designing a campus-wide distribution network or a mission-critical control room, Gefen has the technology and expertise to ensure your project's success. Let our specialists help you select the right solution.

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