Description
Dual-Frequency USB RFID Reader, 125 kHz and 13.56 MHz
This dual-frequency USB RFID reader identifies compatible 125 kHz badges and 13.56 MHz cards, combining two reader types in one device. It is a versatile option for businesses, schools, workshops, and RFID system integrators.
Once connected, it automatically sends the badge identifier to the computer through its USB plug-and-play interface.
Technical specifications
- Type: dual-frequency USB RFID reader
- Frequencies: 125 kHz and 13.56 MHz
- Common 125 kHz formats: EM4100, TK4100, and compatible formats
- Common 13.56 MHz formats: cards compatible with ISO 14443A
- Function: reads RFID identifiers
- Interface: USB
- Output mode: USB keyboard emulation
- Installation: plug and play
- Power: 5 V DC via USB
- Reading distance: up to approximately 8 cm, depending on the badge
- Reading time: approximately 0.2 seconds
- Indicators: buzzer and light indicator
- Dimensions: approximately 98 × 63 × 10 mm
- Color: black
Key features
- Two frequencies in one reader
- Compatible with several badge families
- Direct USB connection
- Automatic identifier entry
- Audio and visual confirmation
- No Arduino or external circuit required
- Useful for installations using more than one card type
Main applications
- Registering low- and high-frequency badges
- Time and attendance tracking
- Managing employees, students, and visitors
- Identification in parking facilities
- Managing members and subscribers
- Integration with access-control software
- Checking which badge types are in use
- Inventory and traceability
How to use
- Connect the reader to the computer’s USB port.
- Wait for automatic detection.
- Open a text editor, Excel, or your management software.
- Place the cursor in the field where the identifier should appear.
- Present a compatible 125 kHz or 13.56 MHz badge.
- The reader detects the badge and types its identifier automatically.
- Repeat to register other badges.
Tip: In Excel, set the cell format to Text before scanning badges to preserve leading zeros.
Compatibility and limitations
- The reader may not indicate the frequency in its output; it mainly sends the identifier.
- Not all 13.56 MHz cards are compatible because multiple protocols use this frequency.
- Not all 125 kHz badges use the EM4100/TK4100 protocol.
- This product is for reading, not writing or copying.
- A detected card is not necessarily compatible with your access-control system.
- Use only badges you own or are authorized to use.
Keywords: tag, ID, wireless, keychain, memory, reader, HID.









