--- product_id: 378196619 title: "A" brand: "dtech" price: "285 kr" currency: DKK in_stock: true reviews_count: 5 category: "Dtech" url: https://www.desertcart.dk/products/378196619- store_origin: DK region: Denmark --- # No external power needed Supports 4000ft (1200m) range Auto baud rate up to 115.2 Kbps A **Brand:** dtech **Price:** 285 kr **Availability:** βœ… In Stock ## Summary > πŸ”— Connect Beyond Limits β€” Power, Speed & Distance in One Sleek Converter ## Quick Answers - **What is this?** A by dtech - **How much does it cost?** 285 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/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 - β€’ **Seamless Speed Sync:** Automatic baud rate detection up to 115.2 Kbps ensures lightning-fast, hassle-free communication every time. - β€’ **Plug & Play Power Freedom:** Unique serial charge pump tech powers the converterβ€”no external supply required, freeing your setup from clutter. - β€’ **Long-Distance Connectivity:** Reliable data transmission up to 4000ft (1200m) keeps your industrial or office devices connected across vast spaces. - β€’ **Compact Industrial Strength:** Miniature matte black design fits anywhere, built tough for professional-grade serial communication. - β€’ **Universal Serial Compatibility:** Effortlessly bridges RS232, RS485 (2 or 4-wire), and RS422 devices with zero delay and no jumper settings. ## Overview The DTech A is a professional-grade RS232 to RS485/RS422 serial converter designed for seamless, long-distance data communication. Featuring unique charge pump technology, it operates without external power, supports automatic baud rate detection up to 115.2 Kbps, and reliably transmits data up to 4000ft (1200m). Compatible with multiple serial standards and devices, it offers plug-and-play ease with industrial durability, making it the go-to solution for modern serial connectivity needs. ## 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: Unlike another one I bought that claimed to do both 2-wire RS-485 AND 4-wire RS-422, this one actually does both standards very well. Connects every time and works like a champ. Highly recommend. 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 | #11,001 in Computers ( See Top 100 in Computers ) #21 in Serial Adapters | | Brand | DTECH | | Color | black | | Compatible Devices | RS232, RS485, RS422 devices | | Connector Type | DB9 female for RS232, terminal board RS485/RS422 | | Customer Reviews | 4.5 4.5 out of 5 stars (279) | | Finish | Matte | | Input Voltage | 9 Volts | | Item Dimensions | 5.6 x 10.7 x 16.3 centimeters | | Manufacturer | DTech | | Model Number | ADT-9003 | | Number of Items | 1 | | Number of Ports | 2 | | Package Quantity | 1 | | Power Plug Type | No Plug | | Specific Uses For Product | PC | | UPC | 714131652419 600649504343 | | Unit Count | 1 Count | | Warranty Type | 1 year warranty | ## 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 M***. on 4 April 2021* Unlike another one I bought that claimed to do both 2-wire RS-485 AND 4-wire RS-422, this one actually does both standards very well. Connects every time and works like a champ. Highly recommend. ### ⭐⭐⭐⭐⭐ 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 - DTECH USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet - DTECH RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.dk/products/378196619-](https://www.desertcart.dk/products/378196619-) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-05-16*