The RDM6300 125KHz EM4100 RFID Card ID Reader Module is a compact contactless RFID reader designed for reading compatible 125KHz RFID cards, key fobs, tags, and other low-frequency RFID transponders. Based on the RDM6300 RFID reader platform, the module provides a simple way to add RFID identification and access-control functionality to microcontroller and embedded electronics projects.
The module operates at 125KHz and is commonly used with EM4100-compatible read-only RFID cards and tags. When a compatible RFID tag is brought within the reader's operating range, the module detects the tag and outputs its unique identification number through a serial interface. This allows a connected microcontroller to identify individual cards or tags and perform programmed actions such as authentication, access control, logging, switching, or device activation.
The RDM6300 provides a convenient UART/TTL serial interface, making it easy to connect to Arduino, ESP32, ESP8266, STM32, Raspberry Pi, and other compatible development boards. The RFID reader can continuously scan for compatible tags and send the detected tag ID to the host controller, where the ID can be compared with stored credentials or recorded for identification and monitoring purposes.
The module is suitable for DIY access-control systems, electronic door-lock projects, attendance systems, RFID-based automation, identification systems, inventory tracking, smart cabinets, lockers, embedded authentication, and educational RFID experiments. Its contactless operation eliminates the need for physical electrical contact between the reader and RFID tag, making it convenient for applications requiring quick and simple identification.
Designed for electronics hobbyists, students, engineers, IoT developers, automation enthusiasts, and DIY makers, the RDM6300 125KHz EM4100 RFID Card ID Reader Module provides an easy-to-integrate RFID identification solution for low-frequency RFID applications.
RDM6300 RFID Reader Module
125KHz Low-Frequency RFID Reader
EM4100 Compatible RFID Reader
Contactless RFID Identification
Reads Compatible RFID Cards
Reads Compatible RFID Key Fobs
Reads Compatible RFID Tags
Unique RFID Tag ID Reading
UART / TTL Serial Output
Simple Serial Communication
Easy Microcontroller Interface
Suitable for Arduino
Compatible with ESP32
Compatible with ESP8266
Compatible with STM32
Compatible with Raspberry Pi Through Suitable Interface
Fast Tag Identification
Automatic Tag Detection
Read-Only RFID Identification
No Physical Contact Required
Compact Module Design
Low Power Operation
Suitable for Educational Projects
Useful for Embedded Systems
Suitable for Security Prototypes
Compact and Lightweight
Simple Wiring
Reliable Contactless Identification
Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.
