---
product_id: 34940729
title: "DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device"
brand: "dtech"
price: "170 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Dtech"
url: https://www.desertcart.pl/products/34940729-dtech-port-powered-rs232-to-rs232-serial-port-isolator-optic
store_origin: PL
region: Poland
---

# 2.5KV rms optical isolation voltage Supports up to 57.6K bps RS232 asynchronous data rate DB9 9-pin male-female reversible connector DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device

**Brand:** dtech
**Price:** 170 zł
**Availability:** ✅ In Stock

## Summary

> ⚡ Protect your ports, power your productivity!

## Quick Answers

- **What is this?** DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device by dtech
- **How much does it cost?** 170 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/34940729-dtech-port-powered-rs232-to-rs232-serial-port-isolator-optic)

## Best For

- dtech enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Protect:** Instantly safeguard your PC and RS232 devices from surges, static, and ground loops with a compact inline isolator.
- • **Power from Port:** No external power needed—self-powered directly from RS232 signals for hassle-free setup.
- • **Reliable Data Flow:** Supports stable asynchronous communication up to 57,600 bps, perfect for professional-grade serial setups.
- • **Reversible DB9 Design:** Male/female DB9 connectors with thumbscrews ensure secure, flexible connections every time.
- • **Universal Compatibility:** Works seamlessly with modems, routers, RFID readers, industrial equipment, and more using standard 3-wire RS232.

## Overview

The DTECH Port Powered RS232 to RS232 Serial Port Isolator is a compact, self-powered optical isolator designed to protect your PC and RS232 devices from electrostatic discharge, surges, and ground loops. Featuring reversible DB9 connectors and supporting data rates up to 57.6K bps, it ensures reliable, interference-free serial communication for a wide range of industrial and professional applications.

## Description

DTECH 3 Wire RS232 Data Interfaces Opto Isolator for Typical isolated RS-232 communications link Why take a chance on blowing up your COMM PORT this simple mini RS232 opto isolator device will protect your PC and RS232C devices, when plugging into an unknown device or plugging into one that has a short you can damage your comm port in a hurry! This compact RS232 Isolator Optic Electric adapter is designed to protect the RS232 serial port at both ends of the device, inhibit static and surge, prevent ground loop and surge damaging devices. Connection: 9 pin DTE devices transmit on pin 3 and receive on pin 2 9 pin DCE devices transmit on pin 2 and receive on pin 3 Specific Optic electric isolation voltage: Instant 2.5KV rms; Continous 500VDC RS232 adapter's transmission Rate: 300 bps – 57600 bps Power: self powered, Supply from RS232 (one of TXD / DTR / RTS) Original Packing Included 1 x Port Powered RS-232 Isolator 1 x User Manual

Review: This Device Works GREAT!!! - I had industrial equipment connected to a laptop about 50 feet away via RS232 with USB adapter into laptop. I had many issues of laptop freezing or com port/usb issues related to this connection. I simply placed this device inline with RS232 near the laptop and no more problems. This is a very quick, inexpensive and amazing fix. The device somehow magically powers itself from the communications - no need for external isolated power sources... Works Great. I use mine at 19.2K baud, but it is rated for much higher speed...
Review: Stay under 57600 bauds and you will be fine - As another reviewer mentioned, stay under 57600 bauds for the isolator to work well--anything above and you end up with corrupted data. So only 4 stars as the description claims it can do more than that. Otherwise, I tested continuity across the pins, isolation does seem to work.

## Features

- DB9 9 pin male to female serial converter - RS232 optical Isolator for RS232C system communication serial port optical isolation protector product
- Mini RS232 opto isolator serial adapter is suitable to protect electric terminal devices using 3 wire system (TXD, RXD and GND), such as modem, router, RFID reader, radio, multi-user system and satellite receiver, computer, etc
- DE9 RS232 isolated interface adapter protects against the effects of electrostatic discharge, surge, ground loop, faulty wiring and lightning
- Bus-powered serial isolator RS232 surge protector supports RS-232 asynchronous communication standard, direct insert into RS-232 interface serially, convenient operation
- For added convenience, the RS232C DB-9’s male / female genders are reversible with the included thumbscrews

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EACRB0K |
| Best Sellers Rank | #162 in Serial Adapters |
| Brand | DTECH |
| Color | Black |
| Compatible Devices | PC |
| Connector Type | DB9 |
| Customer Reviews | 4.0 out of 5 stars 41 Reviews |
| Input Voltage | 9 Volts |
| Item Dimensions | 2.6 x 1.3 x 0.7 inches |
| Item Weight | 0.07 Pounds |
| Item dimensions L x W x H | 2.6 x 1.3 x 0.7 inches |
| Manufacturer | Guangzhou DTECH Electronics Technology Co.,Ltd |
| Model Number | DT-9011 |
| Number of Items | 1 |
| Number of Ports | 2 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Specific Uses For Product | PC |
| UPC | 600649504725 |
| Unit Count | 1.0 Count |
| Warranty Description | 180 days from the date of the purchase |
| Warranty Type | Limited |

## Product Details

- **Compatible Devices:** PC
- **Specific Uses For Product:** PC
- **Connector Type:** DB9
- **Color:** Black
- **Item dimensions L x W x H:** 2.6 x 1.3 x 0.7 inches

## Images

![DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device - Image 1](https://m.media-amazon.com/images/I/51dWrUg1YqL.jpg)
![DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device - Image 2](https://m.media-amazon.com/images/I/512IZTF7E4L.jpg)
![DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device - Image 3](https://m.media-amazon.com/images/I/514rpBIwGmL.jpg)
![DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device - Image 4](https://m.media-amazon.com/images/I/51bBOmTfTHL.jpg)
![DTECH Port Powered RS232 to RS232 Serial Port Isolator Optic Electric Adapter to Protect You PC and RS-232 Device - Image 5](https://m.media-amazon.com/images/I/51fUiFRZFFL.jpg)

## Questions & Answers

**Q: I installed dt-9011 rs232 but cannot find the driver for Windows 10. Where can I download the driver?**
A: For the RS232 serial isolator itself, there is no need of driver, if you use the isolator with other serial adapter like USB to serial adapter, you may find the driver from the supplier of the USB to serial adapter. And if you purchased USB to serial adapter from us, pls contact us directly via the order page "contact seller", so we can tell which driver you need.

**Q: Will this work for a usb/serial line from my macmini to my transciever (i.e., is there sufficient power to get the signals accross)?**
A: Yes, this RS232 serial port isolator can be connected with a usb to serial cord, but please make sure that serial port pin of the cable is a standard 9 pin to get sufficient power or you may add a DC 9V power supply to pin 7.

**Q: Would this work for a ROC809?**
A: As long as your device is with RS232 port, it will work. If have any further question, please feel free to contact us via the order page directly anytime.

**Q: Is there optical isolation on all three lines: txd, rxd and gnd ?**
A: Yes, it's right.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This Device Works GREAT!!!
*by R***S on March 13, 2019*

I had industrial equipment connected to a laptop about 50 feet away via RS232 with USB adapter into laptop. I had many issues of laptop freezing or com port/usb issues related to this connection. I simply placed this device inline with RS232 near the laptop and no more problems. This is a very quick, inexpensive and amazing fix. The device somehow magically powers itself from the communications - no need for external isolated power sources... Works Great. I use mine at 19.2K baud, but it is rated for much higher speed...

### ⭐⭐⭐⭐ Stay under 57600 bauds and you will be fine
*by D***. on September 19, 2025*

As another reviewer mentioned, stay under 57600 bauds for the isolator to work well--anything above and you end up with corrupted data. So only 4 stars as the description claims it can do more than that. Otherwise, I tested continuity across the pins, isolation does seem to work.

### ⭐⭐⭐⭐⭐ You MUST power up both DTE and DCE sides of the isolator.
*by D***J on March 7, 2020*

Typically for ham radio use, the DTE side (Female 9-pin connector) is connected to a PC serial port and receives power from the DTR signal on pin 4 (a 9-pin plug on the PC). PC radio software has setup options to power this pin. When running Linux, remember to add yourself to the "dialout" Group or nothing will work. You must also provide power to the DCE side of this isolator (Male 9-pin) on pin 4 from a source common to the isolated equipment (e.g. a rig interface). If a setup parameter on the rig interface does not offer this option, a 9V battery negative (-) side to pin 5, positive (+) side to pin 4 through a 10k resistor will work. This is on the side facing into the serial port of the rig interface. Upon testing, the isolator will run with voltage from 3 - 9 Volts on pin 4. Please verify documentation of the rig interface to be certain there is not a conflict. Product literature included with the DTech isolator indicates it can also be powered via RTS on pin 7. That was not tested. Overall, this product performs as advertised. I did not inject a 2500 VAC pulse or 500VDC to test isolation. MY REQUEST TO DTech: Please let us know what isolator IC you use inside! Verification would have been much simpler and more complete.

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-15*