DB9 Serial over Cat5e Extender Balun

Up to 3300 Feet | Power Adapters Included | Easy to Install
Quantity Discount Pricing
1-2 3-5 6-7 8-9 10+
$92.39 $87.19 $83.06 $81.67 $80.33

DB9 Serial over Cat5e Extender Balun

Extend your Serial signal over 3300 feet away, using one Cat5e or Cat6 cable. This Serial extender comes with two adapters for a complete setup. One adapter (local) connects the PC, while the other (remote) connects to the device. The Serial over Cat5 Extender works with RS-232, RS-422, and RS-485 signals. Use where plenum rated cable is required to keep cost down.


  • Extend Serial signals 3300 feet over one UTP Cat5e/6 cable
  • Features an aluminum body for heat dissipation
  • Powered Transmitter and Receiver to extend serial distances in excess of 3000 feet
  • Works with RS-232, RS-422, and RS-485 signals
Write Your Own Review
You're reviewing:DB9 Serial over Cat5e Extender Balun
Your Rating

Proposition 65

WARNING: This product can expose you to chemicals including phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov


Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment in the European Union.  It stands for Restriction of Hazardous Substances Directive.

REACH, a European Union regulation addresses the production and use of chemical substances and their potential impacts on both human health and the environment.  It stands for Registration, Evaluation, Authorisation, and Restriction of chemicals.


The WEEE Directive set collection, recycling and recovery targets for all types of electrical goods in the European community.  It stands for Wate Electrical and Electronic Equipment Directive.

* The following information is for information purposes only.  It does not guarantee that the product adheres to the following standards.  Please check the product description for specific certifications.

Q: What is a balun?

A: A balun is a small transformer which converts an audio or video signal from unbalanced to balanced and vice versa (hence the term 'bal*un'). By doing so baluns make the necessary impedance adjustment for audio-visual signal transmission between different wiring systems.

Q: Why use a Balun?

A: Sending your audio video and data signals over a Cat5e or Cat6 gives you three big advantages. The first one is that it allows you to carry your signal over an extremely long distance overcoming distance limits of some technologies. The second advantage is that it saves you money. Cat5e/6 is affordable especially in plenum rated spaces which is why it’s the cable of choice for media extension. Thirdly Cat5e/6 cable is easier to run in small conduit and tight in-wall installations.

Q: What is the picture quality when using a balun?

A: The picture will be the as good as the source signal. Baluns are designed to maintain signal quality.

Q: Do I need any special tools to install a balun system?

A: No all of our baluns are plug-and-play. Simply connect both baluns to your equipment and run the cable.

Features & Specs
Connector AType of Connector on Side A of the adapter?DB9 Male
Connector BType of Connector on Side B of the adapter?DB9 Male
DistanceMax distance this adapter supports?3300 Feet
Additional Cable RequiredDoes this adapter require any other cables?Ethernet
Powered ByHow is this adapter powered ?External Power Supply (Included)