---
product_id: 5565676
title: "UOTEK UTEK UT-2201 Port-Powered, RS-232 to RS-485, Mini-Size"
brand: "uotek"
price: "$23.45"
currency: USD
in_stock: true
reviews_count: 3
category: "Uotek"
url: https://www.desertcart.us/products/5565676-uotek-utek-ut-2201-port-powered-rs-232-to-rs
store_origin: US
region: United States of America
---

# Port-powered, no external power needed 1,200m RS-485 transmission range Auto data flow control, zero delay UOTEK UTEK UT-2201 Port-Powered, RS-232 to RS-485, Mini-Size

**Brand:** uotek
**Price:** $23.45
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect smarter, reach farther, power easier.

## Quick Answers

- **What is this?** UOTEK UTEK UT-2201 Port-Powered, RS-232 to RS-485, Mini-Size by uotek
- **How much does it cost?** $23.45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/5565676-uotek-utek-ut-2201-port-powered-rs-232-to-rs)

## Best For

- uotek enthusiasts

## Why This Product

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

## Key Features

- • **Compact Pro-Grade Build:** Miniature 63x33x17mm form factor fits anywhere, delivering professional-grade serial conversion without the bulk.
- • **Extended Reach Connectivity:** Boost your communication range up to 1.2 kilometers with robust RS-485 differential signaling—perfect for sprawling industrial networks.
- • **Plug & Play Power Efficiency:** Port-powered design eliminates bulky adapters, streamlining your setup with effortless power from the RS-232 port.
- • **Smart Auto Direction Control:** Built-in zero delay auto receive/transmit switching ensures smooth, handshake-free data flow for reliable half-duplex communication.
- • **Seamless Software Compatibility:** Works flawlessly with existing RS-232 software and hardware—no programming tweaks required, saving you time and headaches.

## Overview

The UOTEK UT-2201 is a professional RS-232 to RS-485 serial converter that extends communication distances up to 1.2km using port-powered technology. Its compact design and auto data flow control enable seamless integration with existing RS-232 systems without software changes, making it ideal for industrial automation, access control, and other long-distance serial communication applications.

## Description

For communication between PC with different standard serial port and external equipments or intelligent instruments, standard serial conversion is necessary. This converter is compatible with RS-232C, RS-485 standards. It converts RS-232 signals into balanced differential RS-485 signals. The transmission distance of RS-232 communication can be extended to 1.2km. It adopts unique “RS-232” charge pump technology to drive the system, and gains power without initializing RS-232 serial port. This converter is with built-in zero delay auto receiving and transmitting conversion and unique I/O circuit auto control data flow direction without any handshake signal (RTU, DTR). It is compatible with current communication software and hardware, no need to set the previous working mode which base on RS-232. This guarantees that there is no need to modify the programming under RS-232 half duplex mode; it will run smoothly under current software and hardware. The transmission rate is 300-115.2kbps. It can be used between hosts, host and SCM, which building a point to point, point to multipoint long-distance communication networking. It is widely applied in industrial automation control system, all-in-one card, access control system, parking system, ATM system, bus charging system, canteen ticketing system, attendance system, and toll station system, etc.

Review: Five Stars - worked well fast ship nice job
Review: Five Stars - Things dope

## Features

- No RS422 converter. It is Pro grade RS232 to RS485 converter. It easily lets you connect any RS485 device directly to COM port
- Standards: RS-232C, RS-485 EIA/TIA ● Connector: RS-232 DB9 female; RS-485 DB9 male, with terminal block
- Working mode: asynchronous half-duplex differential transmission ● Transmission media: Twisted-pair or shielded cable
- Baudrate: 300bps-115.2Kbps ● Dimension: 63mmX33mmX17mm ● RS-232 to RS-485 Serial Communication Data Converter Adapter Mini-Size
- Operating temperature: -25℃ to 70℃ ● Relative humidity: 5% to 95% Transmission distance: 1,200m(RS-485), 5m(RS-232)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KBJ7JBS |
| Best Sellers Rank | #691 in Serial Adapters |
| Brand | UOTEK |
| Color | black, white |
| Customer Reviews | 4.7 4.7 out of 5 stars (6) |
| Date First Available | May 14, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 6.4 x 4.3 x 2.3 inches |
| Item Weight | 1.76 ounces |
| Item model number | UT-2201 |
| Manufacturer | UTEK |
| Product Dimensions | 6.4 x 4.3 x 2.3 inches |

## Product Details

- **Color:** black, white
- **Compatible Devices:** PC
- **Connector Type:** Serial Adapter
- **Item dimensions L x W x H:** 6.4 x 4.3 x 2.3 inches
- **Specific Uses For Product:** personal

## Images

![UOTEK UTEK UT-2201 Port-Powered, RS-232 to RS-485, Mini-Size - Image 1](https://m.media-amazon.com/images/I/61sUJ0-TqXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five Stars
*by W***S on October 8, 2014*

worked well fast ship nice job

### ⭐⭐⭐⭐⭐ Five Stars
*by E***Y on March 29, 2015*

Things dope

### ⭐⭐⭐⭐ Review
*by S***Y on March 21, 2020*

Good

## Frequently Bought Together

- UTEK UT-2201 Port-powered, RS-232 to RS-485/422, Mini-size
- UTEK UT-8801 1.5M Length USB to RS-232 Converter ver2.0(1-Port USB to RS-232 Serial Converter with ESD Protection)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-26*