Frequency options: 125KHz, 13.56MHz, and 125KHz+13.56MHz, allowing for versatile card reading capabilities. Fast reading speed of 0.2 seconds, ensuring quick access and efficient operation. Reading distance of 0-80mm, providing flexibility in card placement for user convenience. USB communication interface and power supply mode, making it easy to connect and use with various devices. Compatible with multiple card types, including TK4001/EM4100 ID cards and MF/S50/S70 IC cards, suitable for various applications. This card reader is designed for a wide range of applications, including access control, consumption systems, hotel locks, and utility meter management. Simply open any text editor on your computer, bring the card close to the reader, and the card number will be displayed instantly. The device outputs the first 10 digits of the card number by default, making it user-friendly and efficient for various ID or IC card management systems. Color: Black Material: ABS Package Contents: 1*Dual-frequency RFID card reader Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.