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 a wide range of RFID tags and cards. This device enables copying of RFID tags and cards for use in accessing secure 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 allows for convenient use anywhere. Due to manufacturing 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 varies) 1 × UID keychain (color varies) 2 × Adapter (color and appearance may vary; interface remains consistent and fully functional) 1 × Data cable (color varies) Note: Light reflection and display settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.