Automatic polling function: When access control credentials are written to the device, it can automatically recognize and unlock doors. Our compact and versatile device supports cloning and emulation of various RFID tags and cards. It enables duplication of RFID tags and cards for use in accessing secure 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, portable design makes it easy to carry. Slight variations in product appearance, color, or printed text may occur between batches, but these do not affect functionality. Color: Black & Transparent Material: Plastic Package Contents: 1 x RFID Reader 5 x CUID Keychain (random color and appearance; specific color or appearance not guaranteed) 5 x CUID Card 2 x Adapter (random color and appearance; specific color or appearance not guaranteed; interface remains unchanged) 1 x USB Cable (random color; specific color not guaranteed) 1 x Lanyard Note: The package includes only the items listed above. Other products are not included. Note: Color discrepancies may occur due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.