Welcome to the store! 1. Built-in high-frequency antenna, corresponding to the antenna depth, eliminates dead angles and reads the entire data card without interruption. 2. Increase the frequency of keystrokes, the card size accommodates everything. 3. Data analysis is completely stable and the error rate is low. 4. Low-frequency antenna improves the signal-to-noise ratio, the recognition rate is higher, and the mobile design meets different needs. 5. No antenna interface, no need to connect, easy to damage. It is simple and convenient to remove the lithium battery. (In offline mode, you can use the power bank). Except for having nothing to do with the original relay, it has low cost, light weight, and convenient transportation. Due to different batches, there may be differences in product appearance, color, and printed text, which does not affect the use. Accessories random color and appearance, coil color is random, no specification is accepted. Color: Black Material: PCB Specifications: 5X CUID Cards Package Contents: 1 x RFID Card Reader Kit Only the above package content, 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 allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!