1. Built-in high-frequency antenna ensures consistent reading depth, eliminates blind spots, and reads RFID cards without interruption. 2. Optimized design accommodates standard card sizes. 3. Data analysis is stable with a low error rate. 4. Low-frequency antenna improves signal-to-noise ratio and recognition speed; compact, portable design suits various applications. 5. No external antenna interface required—plug-and-play operation. Features removable lithium battery (offline use supported with external power bank). Independent design—no integration with original relay systems; lightweight and cost-effective for transport. Product appearance, color, and printed text may vary slightly between batches without affecting functionality. Accessories included may vary in color and appearance; coil color is random—no specific color or specification guaranteed. Color: Black Material: PCB Specifications: Supports 5x CUID cards Package Contents: 1 x RFID Card Reader Kit Note: Actual product color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.