Description
USB 125kHz RFID Reader for EM4100 / TK4100
This desktop USB reader reads the identifiers of compatible 125kHz EM4100 and TK4100 cards, key fobs and badges. It sends the ID to the computer as keyboard input. No Arduino or separate power supply is required; the reader is powered from USB.
Technical specifications
- Type: desktop USB RFID reader
- Frequency: 125kHz
- Compatible card types: EM4100 and TK4100
- Function: read RFID identifier
- Interface / output: USB; keyboard emulation
- Installation: plug and play, as listed
- Power: 5V DC from USB
- Reading distance: approximately 5–8cm, as listed
- Default output format: 10 decimal digits, as listed
- Read indication: built-in buzzer
- Dimensions: approximately 98 × 63 × 10mm
- Operating temperature: −10 to +70°C
- Storage temperature: −20 to +80°C
- Colour: black
Typical uses
Personnel attendance, badge registration, visitor or member identification, authorized access workflows, loyalty systems, and classroom or demonstration projects.
How to use
- Connect the reader to a USB port.
- Open the application where you want the ID entered, such as a text editor or spreadsheet.
- Place the cursor in the intended field.
- Present a compatible 125kHz EM4100 or TK4100 badge.
- After the beep, the ID is entered at the cursor as keyboard input.
- Save the identifier in your database if needed.
For a list of badges, place the cursor on a new line or spreadsheet cell before each scan. Because the reader behaves like a keyboard, make sure the correct application and field are focused before presenting a badge.
Compatibility and limitations
- Does not read 13.56MHz cards.
- Other 125kHz protocols are not necessarily compatible.
- EM4100 and TK4100 badges are generally read-only.
- The reader outputs an identifier; it does not program cards.
- Use access badges only with authorization and follow applicable system policies.
