Function of automatic polling: if the customer writes the access control data into the device, the device can automatically recognize and open the door. Our compact and versatile device supports cloning and emulation of various RFID tags and cards. With this device, you can create copies of RFID tags and cards for authorized access to secured areas or equipment requiring RFID authentication. It supports emulation and storage of multiple RFID card types (125 kHz and 13.56 MHz). This device is a useful tool for professionals and hobbyists working with RFID technology. Its compact and portable design makes it convenient to carry. Due to production variations, there may be slight differences in product appearance, color, and printed text — these do not affect functionality. Color: Black & Transparent Material: Plastic Package Contents: 1 × Smart chip reader 1 × CUID keychain (color may vary) 1 × UID keychain (color may vary) 2 × Adapter (color and appearance may vary; interface remains unchanged and fully functional) 1 × Data cable (color may vary) Other items shown are not included. Note: Color representation may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.