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 also 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 allows for convenient use anywhere. Due to manufacturing variations, there may be slight differences in product appearance, color, or printed text—these do not affect functionality. Color: Black & Transparent Material: Plastic Package Contents: 1 × Smart chip reader 1 × CUID keychain (random color) 1 × UID keychain (random color) 2 × Adapter (random color; appearance may vary but interface remains unchanged and fully functional) 1 × Data cable (random color) Note: The package includes only the items listed above. Other accessories are not included. Note: Light reflection and display differences may cause slight color variation between the image and the actual product. Measurement tolerance is ±1–3 cm.