



RDM6300 125KHz EM4100 RFID Card ID Reader Module
- SKU: 403718 - Compact 125 KHz RFID Reader Module designed for reading EM4100-compatible ID tags and cards.
- Features a TTL level RS232 (UART) interface with a fixed 9600 bps Baud Rate for simple microcontroller integration.
- Fast decoding time of less than 100 ms; operates at a standard 5V DC supply.
- Supports external antenna connection for flexible installation and enhanced reading range (up to 150 mm max effective distance).
- Low power consumption, drawing less than 50 mA during operation.
Product Details
RDM6300 125KHz EM4100 RFID Card ID Reader Module (SKU: 403718)
The RDM6300 is a highly popular and straightforward 125 KHz RFID (Radio Frequency Identification) Reader Module used for secure identification and access control projects. This module is specifically designed to read the unique ID codes from EM4100-compatible read-only or read/write transponders (cards, tags, key fobs).
Its primary interface is a simplified TTL level RS232 (UART), making it exceptionally easy to connect directly to microcontrollers like Arduino or ESP32 using the standard serial communication pins. The module operates at a fixed 9600 bps baud rate and requires a stable 5V DC power supply, consuming less than 50 mA. A key feature is the support for an external antenna coil, which allows the module to achieve a maximum effective reading distance up to 150 mm, though the typical reception distance is 20 mm to 50 mm with a small standard coil. With a decoding time of less than 100 ms, the RDM6300 provides rapid and reliable tag identification.









