Features: Smart card reader: Plug and play, driver-free, contactless card reading speed: response speed 0.2S, reading and writing distance up to 8cm, reading and writing interval time 0.2S, ID card reading and writing support, stable performance and compatibility Strong USB interface is plug-and-play: the wire width is about 1.4m, and the outside of the interface cable is wrapped in PVC material, which is durable and has higher transmission efficiency. LED display light: The LED light is located on the right side of the product. Red indicates standby status and green indicates successful card swiping. ： There are sponge pads on the four sides of the bottom of the anti-slip sponge pad, and removable screws inside the anti-skid and wear-resistant sponge pad are provided. Specifications: Applicable card types: ID card Sensing distance: 0-5 (cm) Power: 0 (W) Working frequency: 125 (Khz) ) Card reading time: 0.2 (s) Model: R20D Color: Black Packaging contents: 1 *Access card issuer's note: 1. Due to the difference between different monitors, the picture may not be Reflects the actual color of the item. We guarantee the style will be the same as shown in the pictures. 2. Please allow slight size differences due to different manual measurements.