---
product_id: 14851858
title: "Tripp Lite Serial Over Cat5 / Cat6 RS232 Extender, Transmitter and Receiver (B165-101)"
brand: "tripp lite"
price: "¥34727"
currency: JPY
in_stock: true
reviews_count: 4
category: "Tripp Lite"
url: https://www.desertcart.jp/products/14851858-tripp-lite-serial-over-cat5-cat6-rs232-extender-transmitter-receiver
store_origin: JP
region: Japan
---

# Full-duplex data flow 1,000m RS232 range Plug-n-Play, no drivers Tripp Lite Serial Over Cat5 / Cat6 RS232 Extender, Transmitter and Receiver (B165-101)

**Brand:** tripp lite
**Price:** ¥34727
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your serial connections—distance, speed, and simplicity in one sleek extender!

## Quick Answers

- **What is this?** Tripp Lite Serial Over Cat5 / Cat6 RS232 Extender, Transmitter and Receiver (B165-101) by tripp lite
- **How much does it cost?** ¥34727 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/14851858-tripp-lite-serial-over-cat5-cat6-rs232-extender-transmitter-receiver)

## Best For

- tripp lite enthusiasts

## Why This Product

- Trusted tripp lite brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extend Your Reach:** Seamlessly connect RS-232 devices up to 1,000 meters away—no distance too far for your workflow.
- • **Zero Hassle Setup:** Forget drivers and software—just plug in and go with effortless compatibility across all RS-232 protocols.
- • **Cost-Effective Control:** Unlock remote access and control of your serial devices without breaking the budget.
- • **Speed Meets Simplicity:** Experience full-duplex communication that triples your data transfer speed over traditional RS232 cables.
- • **Future-Proof Connectivity:** Compatible with Cat5 and Cat6 cables, ensuring your setup stays modern and reliable.

## Overview

The Tripp Lite B165-101 RS232 Extender Transmitter and Receiver enables reliable serial communication over Cat5 or Cat6 cables up to 1,000 meters. Supporting full-duplex data transfer and all RS-232 protocols, it offers a plug-and-play solution requiring no additional software. Ideal for professionals needing fast, remote serial device access with minimal setup and maximum compatibility.

## Description

Serial over Cat5 Cat6 RS232 Extender Transmitter & Receiver TAA

Review: In the past it was painful to transfer programs to my machine tool over RS232 ... - I'v been using this Cat5/Cat6 RS232 for 3 or 4 years to communicate with 3 CNC machine tools. I have one for each machine. In the past it was painful to transfer programs to my machine tool over RS232 cable. This product allow my program transfers to go about 3 times faster over about a 50 foot distance.
Review: Works, but may need a Null Modem cable on one side - The manual seemed straight forward enough, but it was ultimately too brief. It needs to specify what pin mappings are between the local and remote units. For my application of connecting two computers together with this kit, I needed use a Null modem cable on either side of these adapters. So the pin mapping is essentially pin # to pin #, but only for pins 2, 3, and 5 (the three wires, no hardware handshaking). It would have been helpful to have that specified clearly in the description and in the manual. A null modem swaps pins 2 and 3 so the transmit pin from one sides maps correctly to receive pin on the other, while pin 5 is the ground. Now, not all serial devices are needing a null modem cable to swap pins 2 and 3, and so just using two serial extension cables on both side would work just fine.

## Features

- Locates an RS-232 Serial device up to 1,000 Meters from your system
- Supports full-duplex data communication
- Low cost solution that provides remote access and control of any RS232 protocol device
- No software or drivers required...Plug-n-Play
- Compatible with all RS-232 protocols

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0040834NS |
| Best Sellers Rank | #704 in Serial Adapters #32,252 in Computer Cables & Interconnects |
| Customer Reviews | 4.2 4.2 out of 5 stars (13) |
| Date First Available | August 20, 2010 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 14.4 ounces |
| Item model number | B165-101 |
| Manufacturer | TRIPP LITE |
| National Stock Number | 0 |
| Product Dimensions | 5.3 x 6.3 x 2.25 inches |

## Images

![Tripp Lite Serial Over Cat5 / Cat6 RS232 Extender, Transmitter and Receiver (B165-101) - Image 1](https://m.media-amazon.com/images/I/41p7JyLr-mL.jpg)
![Tripp Lite Serial Over Cat5 / Cat6 RS232 Extender, Transmitter and Receiver (B165-101) - Image 2](https://m.media-amazon.com/images/I/41fJYiAcBML.jpg)
![Tripp Lite Serial Over Cat5 / Cat6 RS232 Extender, Transmitter and Receiver (B165-101) - Image 3](https://m.media-amazon.com/images/I/51DL3JIUGCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ In the past it was painful to transfer programs to my machine tool over RS232 ...
*by A***M on July 20, 2018*

I'v been using this Cat5/Cat6 RS232 for 3 or 4 years to communicate with 3 CNC machine tools. I have one for each machine. In the past it was painful to transfer programs to my machine tool over RS232 cable. This product allow my program transfers to go about 3 times faster over about a 50 foot distance.

### ⭐⭐⭐⭐ Works, but may need a Null Modem cable on one side
*by C***N on April 9, 2024*

The manual seemed straight forward enough, but it was ultimately too brief. It needs to specify what pin mappings are between the local and remote units. For my application of connecting two computers together with this kit, I needed use a Null modem cable on either side of these adapters. So the pin mapping is essentially pin # to pin #, but only for pins 2, 3, and 5 (the three wires, no hardware handshaking). It would have been helpful to have that specified clearly in the description and in the manual. A null modem swaps pins 2 and 3 so the transmit pin from one sides maps correctly to receive pin on the other, while pin 5 is the ground. Now, not all serial devices are needing a null modem cable to swap pins 2 and 3, and so just using two serial extension cables on both side would work just fine.

### ⭐⭐⭐⭐ works well to send tickets to a remote printer 1500 ...
*by D***D on July 29, 2016*

works well to send tickets to a remote printer 1500 feet away. The only down side is that is lighting near by and it will be dead.

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**Shop now:** [https://www.desertcart.jp/products/14851858-tripp-lite-serial-over-cat5-cat6-rs232-extender-transmitter-receiver](https://www.desertcart.jp/products/14851858-tripp-lite-serial-over-cat5-cat6-rs232-extender-transmitter-receiver)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-03*