function of automatic polling, if customer writes access control into device, the device can automatically recognize and open door. Our small and versatile device can clone and emulate a wide range of RFID tags and cards. With This Device, you can create copies of RFID tags and cards, which can be used to access secure areas or equipment that require RFID authentication. You can also emulate and stores different types(125KHZ/13.56MHZ) of RFID cards This Device is a valuable tool for anyone working with RFID technology, whether you're an , security professional, or just a curious hobbyist. And thanks to its compact and portable design, you can take it with you wherever you go!<br><br>Due to different batches, there may be differences in product appearance, color, and printed text, which not affect use. Color: Black & parent Material: plastic<br><br>Package Contents: 1 * Smart chip reader 1 * UID keychain (random color, no specified color accepted) 2 * Adapter (random color, no specified color accepted; the appearance may be different, but interface remains unchanged and does not affect use) 1 * Data cable (random color, no specified color accepted)<br><br>Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.