The RFID card reader is user-friendly and offers a fast card reading speed. As a standard HID device, it requires no driver installation. The card number can be read in any editable field (e.g., Notepad, WORD, or other text editing software). This feature is ideal for extending the functionality of existing software without any modifications. Communication Mode: Standard HID communication. Interface: Full-speed USB device interface, compatible with USB V2.0. Power Supply Mode: USB universal serial bus interface power supply. Working Frequency: 125 KHz. Maximum Sensing Distance: 3-8CM. Supported Card Types: EM series, 4001 series, and compatible radio frequency ID cards. Power Consumption: Less than 0.5W. Operating Environment: Temperature 0-50℃, Humidity: 50-95RH, Air Pressure: 88-106Kpa. Color: Black Material: Plastic Package Contents: 1 * USB RFID Reader Kit (Other products are not included.) Note: Light reflections and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3 cm.