Features: - Support: EM4100/EM4001/TK4100 ID card - Frequency: 125KHz - Effective Distance: 0-80mm - Power Supply: 5V - Working Current: 100mA - Output format: default 2H+4H, can change output format by software - Dimension: 105x70x12mm - Only outputs tag serial numbers, not actual tag contents Installation Instructions First: Connect the usb cable with the card reader to the computer USB port. Second: The reader will 'drip' sound and flash about that power successfully, and then half a second after the 'drip' sound and flash about that device self-test successfully, without Install any drivers, windows will automatically recognize it. Third: Open one EXCEL or WORLD ,the card number would be input by self . Package includes: RFID ID Card Reader x 1 USB cable x 1TPGRADE