RFID Reader Writer: The rfid copier supports various cards, including HID cards. This rfid copier allows you to easily read and write types of cards. If you aren't sure your card whether can be used, please before purchase. Notice: Before reading the card, please press "MODE" button to choose the same frequency as your al card. Or press the "SCAN" button to automatically identify the frequency of the al card.<br>RFID Copier: The rfid Reader Writer enabling seamless communication between your devices when using it for access control and data transfer. It can clone most of access control card, elevator card, attendance card and parking card in the market(Note: When prompted ''write failed'', please press the ''write'' button several times more)<br>Various Card Supported: The rfid reader supports frequency: 125KHz, 250KHz, 375KHz, 500KHz, 625khz, 750kHz, 875KHz, 1000KHZ, 13.56MHz (ISO1443A/B). (Notice: When cracking the 13.56MHz encryption cards, you should connect the reader to the computer) If you aren't sure your card whether can be used, please <br>Easy to Use: The RFID copier duplicator is designed 2 power supply mode, you can use 4 AAA batteries(not included in the package) or directly connect to the computer with USB port(Connect the device to the computer first, then turn on the device). And it is equipped with a HD 2.75 inch full color screen display and multilanguage voice broadcasting<br>Package Included: 1x RFID ID/IC Card Reader Writer, 1x USB Cable, 3x T5577 KeyChain, 3x T5577 cards, and 3x CUID Key Chain. The sensing area is on the back of the device, If you cannot read cards, please adjust the position and try again