RFID Reader Olimex MOD

The Olimex MOD-RFID125 is a compact USB 125 kHz RFID reader module with a built-in antenna. It reads 125 kHz RFID tags at distances of 5–15 cm and emulates either a USB keyboard (HID) or a virtual COM port (CDC), making it compatible with virtually any USB host without requiring special drivers.

When an RFID tag is detected, the module outputs the tag's hex ID as keyboard input or serial data — ideal for access control, attendance tracking, and inventory systems. Simply plug it into a USB port and it's ready to use.

Key Features

• 125 kHz RFID Reader – Reads standard 125 kHz RFID tags
• 5–15 cm Read Range – Built-in antenna, no external antenna needed
• USB HID Keyboard Emulation – Outputs tag ID as keystrokes to any application
• Virtual COM Port (CDC) – Alternative serial communication mode
• Plug and Play – Works with any USB host supporting HID or CDC
• Compact Size – 50 × 20 × 5 mm

Ideal For

• Access control and door entry systems
• Attendance and time-tracking systems
• Inventory and asset tracking
• RFID prototyping and experimentation

Package Contents

• 1× Olimex MOD-RFID125 USB Reader

Resources

• User Manual (PDF)
• Olimex Product Page