RDM6300 125KHz EM4100 RFID Card ID Reader Module

RDM6300 125KHz EM4100 RFID Card ID Reader Module is a compact, low-power RFID reader that operates at 125KHz frequency. It is designed to read EM4100 compatible RFID cards and tags and is widely used in access control, attendance systems, and embedded security applications. With its UART interface, it can be easily connected to microcontrollers like Arduino, ESP32, STM32, and more.

Key Features:

• 125KHz Operation: Works with standard EM4100 RFID tags.
• UART Communication: Easy integration with 3.3V or 5V TTL serial devices.
• Compact Design: Small module size for embedded systems.
• Plug-and-Play: Minimal setup required; just power and serial connection.
• Wide Applications: Ideal for security, access control, and smart automation projects.

Technical Specifications:

• Operating Frequency: 125KHz
• Supported Tags: EM4100, EM4102 compatible cards
• Interface: UART (TTL Level)
• Baud Rate: 9600bps (8N1)
• Voltage Supply: 3.3V to 5V DC
• Current Consumption: < 50mA
• Reading Distance: 2cm to 5cm (depending on tag and antenna)

Mechanical Specifications:

• Module Dimensions: Approx. 38mm × 19mm
• PCB Thickness: Approx. 1.6mm
• Mounting: 2 holes for screw fixing
• Pin Header: Straight 4-pin header for UART and power

Pinout and Wiring:

• VCC: Power input (3.3V – 5V)
• GND: Ground
• TX: Serial output to microcontroller RX
• RX: Not used (for most applications)

Datasheet and Documentation:

• Download RDM6300 Datasheet (PDF)

Applications:

• Access Control: Use in doors, gates, lockers, and turnstiles.
• Attendance Systems: Identify staff, students, or visitors using RFID cards.
• Security Devices: Add authentication to electronic projects and devices.
• Embedded Systems: Integrate with Arduino or Raspberry Pi for custom automation.
• IoT Projects: RFID-based identification in smart homes or industry setups.

Equivalent Models:

• RFID-RC522: 13.56MHz version with SPI interface
• EM-18: 125KHz reader module with serial output
• ID12LA: Integrated RFID module with onboard antenna

Package Includes:

• 1 x RDM6300 RFID Card Reader Module
• 1 x 4-pin Male Header (unsoldered)