Function of automatic polling: if the customer writes the access control into the device, the device can automatically recognize and open the 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 store different types (125kHz/13.56MHz) of RFID cards. This device is a valuable tool for anyone working with RFID technology, whether you're a security professional or a hobbyist. Thanks to its compact and portable design, you can take it with you wherever you go. Due to different batches, there may be differences in product appearance, color, and printed text, which do not affect the use. Color: Black & Transparent Material: Plastic Package Contents: 1 x RFID Reader 2 x UID Card 2 x Adapter (The color and appearance are random, and specific selection is not accepted, but the interface remains unchanged) 1 x USB Cable (The color is random, and specific selection is not accepted) 1 x Lanyard Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.