---
product_id: 335709516
title: "KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino"
brand: "koobook"
price: "€ 0.50"
currency: EUR
in_stock: false
url: https://www.desertcart.gr/products/335709516-koobook-2pcs-rdm6300-rf-module-125khz-em4100-rfid-card-read
store_origin: GR
region: Greece
---

# KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino

**Brand:** koobook
**Price:** € 0.50
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino by koobook
- **How much does it cost?** € 0.50 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/335709516-koobook-2pcs-rdm6300-rf-module-125khz-em4100-rfid-card-read)

## Best For

- koobook enthusiasts

## Why This Product

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

## Description

Specifications: Frequency: 125KHZ Baud rate: 9600 Interface: TTL level RS232 format Working voltage: DC 5V(+/-5%) Working current: <50mA Receive distance: 20~50mm Working temperature: -10°C~+70°C Storage temperature: -20°C~+80°C Humidity: 0~95% Wiring size: 46*32*3mm PCB size: 38.5*19*9mm Note: The installation of electronic modules requires basic knowledge and requires a certain electronic professional foundation and hands-on ability. Please purchase carefully! Manual measurement, with small error. Please check size in detail before purchase. Real colors may slightly differ from the pictures, as it depends on specific monitor settings and light brightness. We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 2Pcs

## Features

- RDM630 series non-contact RF ID card dedicated module, using advanced RF receiving circuit and embedded microcontroller design, combined with efficient decoding algorithm, completes the data reception of EM4100 compatible ID card.
- The module is easy to use. After power supply, the serial port is connected to the Arduino motherboard. When an RFID card enters the card reading range, the module will directly send the card number to the Arduino through the UART. By using the relay module to connect to the Arduino, simple access control can be achieved.
- It has the characteristics of high receiving sensitivity, small working current and high stability.
- Support external antenna.Maximum effective distance up to 50mm.
- Applicable to various radio frequency identification applications such as access control, attendance, charging, anti-theft, and patrol.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SCY2LXB |
| Brand | KOOBOOK |
| Customer Reviews | 4.0 4.0 out of 5 stars (1) |
| Date First Available | 4 September 2020 |
| Item Weight | 18 g |
| Manufacturer | KOOBOOK |
| Manufacturer reference | KB049 |
| Package Dimensions | 12.45 x 7.37 x 0.25 cm; 18 g |

## Images

![KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino - Image 1](https://m.media-amazon.com/images/I/61Qoks2iEZL.jpg)
![KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino - Image 2](https://m.media-amazon.com/images/I/61VGrsxg-CL.jpg)
![KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino - Image 3](https://m.media-amazon.com/images/I/61sakPQhlSL.jpg)
![KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino - Image 4](https://m.media-amazon.com/images/I/61BCXx9oy5L.jpg)
![KOOBOOK 2Pcs RDM6300 RF Module 125KHZ EM4100 RFID Card Read Module ID Reader Module (UART) for Arduino - Image 5](https://m.media-amazon.com/images/I/61D-uggewSL.jpg)

---

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-05-14*