This item is a RFID Card reader, optioanl for rfid IC 13.56mhz, which is widely used for RFID radio frequency identification system and project, such as automated parking management, personal identification and production access control. Model: R20 Frequency: R20C- IC 13.56mhz Read Card Number front 10 digits Reading time: less than 0.5s Power Supply: +5V DC Consume Current: 100mA About Use: 1. Connect with PC through the USB interface directly. 2. Open notepad or a word document. 3. Put card on the top of the reader. 4. The document will output card number automatically. (Due to different product batches, the appearance may be different, which does not affect use.) color:black Material:plastic Package Contents: 2 x RFID Smart Card Reader 2 x USB cable 2 x 13.56MHz IC Card 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.