Condition: 100% Brand NewItem Type: RFID Card Reader Material: ABSColor: As Pictures ShownSize: Approx. 69 x 21mm / 2.7 x 0.8inInterface: USBKeyboardPower Supply: 5VPrompt Method: Single Color LEDSupport Cards: ID (EM4100), FDX-B (11784/85) 125KhzSupported Systems: For windows, for linux, for moc, for ios, for androidReading Distance: Approx. 2 - 5cm / 0.8 - 2inOutput Format: ID card output 8H10D, FDX-B output 15-digit codeHow to use: Insert the card reader into the computer's USB port or OTG cable, then plug the OTG cable into the USB port of the mobile phone with OTG function, and then open a text and bring the card close to the card reader. When the card reader reads After the card is read, the card reader outputs data to the computer like a keyboard. At this time, the card does not move out of the card reading area, and the card reader will always light green.