---
product_id: 378196619
title: "A"
brand: "dtech"
price: "196 Lei"
currency: RON
in_stock: true
reviews_count: 5
category: "Dtech"
url: https://www.desertcart.ro/products/378196619-
store_origin: RO
region: Romania
---

# No external power needed Supports 4000ft (1200m) connection Auto baud rate up to 115.2 Kbps A

**Brand:** dtech
**Price:** 196 Lei
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect smarter, not harder — the pro-grade serial converter your setup deserves!

## Quick Answers

- **What is this?** A by dtech
- **How much does it cost?** 196 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/378196619-)

## 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

- • **Universal Compatibility:** Effortlessly bridges RS232 with RS485/RS422 devices, supporting up to 32 terminals for scalable networks.
- • **Seamless Speed Adaptation:** Auto-detects baud rates up to 115.2 Kbps for flawless, lag-free communication every time.
- • **Extended Reach Connectivity:** Supports ultra-long transmission distances up to 4000ft (1200m), perfect for sprawling industrial setups.
- • **Plug & Play Power Efficiency:** Unique serial charge pump tech powers the converter—no external supply required, simplifying your setup.
- • **Compact Industrial-Grade Design:** Miniature footprint with robust build quality, ideal for professional environments demanding reliability.

## Overview

The DTech A is a professional RS232 to RS485/RS422 converter featuring unique charge pump technology that eliminates the need for external power. It supports automatic baud rate detection up to 115.2 Kbps and enables communication over distances up to 4000ft (1200m). Designed for industrial and commercial use, it offers seamless compatibility with multiple serial devices and a compact, durable form factor.

## Description

One-stop solution for all your connection needs In order to facilitate the allocation of a different standard computer serial interface, external devices or between the intelligence apparatus for remote data communication, the need for standards conversion of the serial interface. Convert an RS232 data signal to RS485 or RS422 The DTECH Industrial RS232 to RS-422/485 Serial Converter is a bi-directional adapter that lets you adapt an RS232 data signal to either RS485 (2 or 4-wire) or RS422 and vice-versa, with support for baud rates up to 115.2 Kbps. The adapter supports auto baud rate detection as well as RS-422 and RS485 mode detection, and supports connection distances of up to 4000ft (1200m). It is suitable for most applications, including industrial, commercial and any general office computer device. Specific Compatible with RS232C,RS485,RS422 TIA/EIA standard Baud rate: 300bps to 115.2Kbps Automatic send / receive data, without external flow control signals. Zero delay automatic transmission Supports multiple terminals up to 32 RS-485 or RS-422 devices Transmission distance: up to 4000 Feet (1200 meters) for RS-485/422 end Power supply: Unique serial charge pump drive technology, no external power supply. Working modes: Asynchronous half-duplex(RS485) or asynchronous full duplex(RS422),no need jumper wire settings. Transmission media of RS232 Data Converter: twisted pair or shielded twisted pair ( STP ). Mini-Size:64mmX33mmX17mm Original Packing Included 1 X DB9 Female RS232 to RS485 RS422 Communication Converter 1 x Terminal Board

Review: Works with an old Expedite synthesizer with RS422 connector. Saved a lot of money.
Review: Working fine. No issue.

## Features

- Pro grade RS232 to RS485 / RS422 converter. It easily lets you connect any RS485 or RS422 device directly to COM port
- Best solution for the communication between serial port and RS485 or RS422 device
- Unique serial charge pump drive technology, no external power supply, the real three-wire communication (TXD,RXD,GND). No need serial port initialization
- Supports baud rates up to 115.2 Kbps; Automatic sense serial signal rate
- Supports a maximum connection distance of 4000ft (1200m)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0196AO1IG |
| Best Sellers Rank | #27,442 in Computers ( See Top 100 in Computers ) #70 in Serial Adapters |
| Item model number | ADT-9003 |
| Manufacturer | DTech |
| Product Dimensions | 5.59 x 10.67 x 16.26 cm; 90 g |

## Product Details

- **Colour:** black
- **Compatible devices:** RS232, RS485, RS422 devices
- **Connector type:** DB9 female for RS232, terminal board RS485/RS422
- **Item dimensions L x W x H:** 5.6 x 10.7 x 16.3 centimeters
- **Specific uses for product:** PC

## Images

![A - Image 1](https://m.media-amazon.com/images/I/51kC8JThzKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***R on 14 October 2021*

Works with an old Expedite synthesizer with RS422 connector. Saved a lot of money.

### ⭐⭐⭐⭐⭐ Review
*by S***U on 7 July 2025*

Working fine. No issue.

### ⭐⭐⭐⭐⭐ Review
*by I***N on 18 September 2024*

They are very easy to connect. Make sure you test the connection on the bench before installation

## Frequently Bought Together

- DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size
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- DTECH RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge

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**Shop now:** [https://www.desertcart.ro/products/378196619-](https://www.desertcart.ro/products/378196619-)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-13*