--- product_id: 98088484 title: "RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid" brand: "luxtech" price: "32.17 DT" currency: TND in_stock: false url: https://www.desertcart.tn/products/98088484-rfid-contactless-smart-card-reader-r21d-id-card-125khz-reader store_origin: TN region: Tunisia --- # RS232 Communication Multi-OS Support 125kHz Frequency RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid **Brand:** luxtech **Price:** 32.17 DT **Availability:** ❌ Out of Stock ## Summary > 🔗 Unlock Efficiency with Every Scan! ## Quick Answers - **What is this?** RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid by luxtech - **How much does it cost?** 32.17 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/98088484-rfid-contactless-smart-card-reader-r21d-id-card-125khz-reader) ## Best For - luxtech enthusiasts ## Why This Product - Trusted luxtech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Data Capture:** Instantly reads UID numbers, streamlining your data entry process. - • **Robust Performance:** Reliable operation across multiple platforms including Windows and Linux. - • **Seamless Integration:** Easily connects via USB or serial port for hassle-free setup. - • **User-Friendly Operation:** Designed for both tech-savvy and novice users with straightforward functionality. - • **Versatile Compatibility:** Supports TK4100/EM4100/EM4001 cards for diverse applications. ## Overview The R21D RFID Contactless Smart Card Reader is a versatile 125kHz ID card reader that supports various operating systems and card types. With its RS232 communication and multiple baud rate options, it ensures quick and reliable data capture for applications ranging from access control to information inquiry. ## Description Important notice: If you are using reader for the first time, you will need the DEMO. Please contact us for the download link. The download link is valid for 7 days. You do not need to submit a return request for malfunction of the reader, the player works fine. ## Features - R21D is a standard 125kHz frenquency RS232 communication ID card reader with optional baud rate of 9600, 19200, 115200, and so on. Support cards: TK4100/EM4100/EM4001, etc... - The user connects the serial port and the USB interface of the data cable of the card reader to the interface of the computer mainframe one by one (open the serial debugging assistant test). When the RFID card is close to the card reader, the factory serial number (UID number) of the RFID card will be reflected in the window of the serial debugging assistant, which is equivalent to the automatic keyboard input number. - Application: Data entry, information inquiry, Internet cafe registration, book lending, conference sign-in, access control and other fields. - Common problems: (1) Operation without feedback: Please check whether the interface plugged in, whether the tag is a valid or whether another RF tag is within the reading range. (2) Data error: Please check whether the mouse is moved, whether the reader is in a critical state and whether the cable length is too long. - Important notice: If you are using reader for the first time, you will need the DEMO. Please contact us for the download link. The download link is valid for 7 days. You do not need to submit a return request for malfunction of the reader, the player works fine. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07MB3Z7S4 | | Best Sellers Rank | 246,175 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 2,043 in External Memory Card Readers | | Brand | Luxtech | | Brand Name | Luxtech | | Colour | Black | | Compatible Devices | Personal Computer | | Compatible devices | Personal Computer | | Connectivity technology | USB | | Hardware Interface | USB | | Hardware interface | USB | | Manufacturer | Luxtech | | Manufacturer Part Number | LT-002 | | Network Connectivity Technology | USB | | Operating System | Linux, Windows 7, Windows XP | ## Product Details - **Brand:** Luxtech - **Connectivity technology:** USB - **Colour:** Black - **Compatible devices:** Personal Computer - **Hardware interface:** USB ## Images ![RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid - Image 1](https://m.media-amazon.com/images/I/61wmAp9fwRL.jpg) ![RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid - Image 2](https://m.media-amazon.com/images/I/51yXj3sQrwL.jpg) ![RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid - Image 3](https://m.media-amazon.com/images/I/512T6RKoJuL.jpg) ![RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid - Image 4](https://m.media-amazon.com/images/I/51LpFXOXIkL.jpg) ![RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid - Image 5](https://m.media-amazon.com/images/I/51ZdLYHDpNL.jpg) ## Frequently Bought Together - RFID Contactless Smart Card Reader R21D ID Card 125kHz Reader RS232 ID Card Reader TK4100/EM4100/EM4001Support Win XPWin CEWin 7Win 10LinuxVistaAndroid - YARONGTECH RFID 125KHz EM4100 Proximity Door Control Entry Access EM card-0.9mm (pack of 100) - Hailege 125Khz EM4100 USB RFID ID Card Reader Swipe Card Reader Plug and Play Read the top 10 Digital Bit With USB Cable --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/98088484-rfid-contactless-smart-card-reader-r21d-id-card-125khz-reader](https://www.desertcart.tn/products/98088484-rfid-contactless-smart-card-reader-r21d-id-card-125khz-reader) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-13*