High Sensitivity, Low Working Current, and High Performance. 125KHz RFID ID (EM4100) Card Reader with USB Interface. Easy to Use, Plug and Play: No need to download drivers. Wide Application: Suitable for all types of RFID applications such as access control, attendance, and security. Made of High-Quality Material: Durable for use. This RFID card reader offers high sensitivity, low working current, and high performance, making it ideal for various RFID applications like access control and attendance. Features: High sensitivity, low working current, and high performance. 125KHz RFID ID (EM4100) card reader with USB interface. Easy to use, plug and play, no driver downloads required. Wide application for access control, attendance, security, and more. Durable construction from high-quality material. Specifications: Supports: All 125Khz RFID EM4100 cards. Frequency: 125Khz. Working Voltage: 5V. Working Current: 100mA. Card Read Distance: 0-80MM. Card Reading Time: <100MS. Card Reading Speed: 0.2S. Card Interval: 0.5S. Built-in Buzzer. Communication Interface: USB interface, serial interface. Charging Method: USB. Working Temperature: 20℃~85℃. Material: Plastic. Color: Black. Size: Approx. 11 * 8 * 2.7cm / 4.3 * 3.1 * 1.1in. Cable Length: 130cm / 4.3ft. Weight: 125g. Package List: 1 x RFID Reader. 1 x USB Cable. If you encounter any product issues after receiving your item, such as damage or incorrect quantity, please contact us immediately for the best possible solution.