Features: Smart card reader: plug and play drive free Non contact card reading fast: reaction 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 strong compatibility Plug and play with USB interface: the wire is about 1.4m wide, and PVC material is used to wrap the interface wire outside, which is strong and durable, with higher transmission efficiency LED display light: LED light on the right side of the product, red for standby mode, green for card swiping success Description: The four sides of the bottom of the anti-skid sponge pad are equipped with sponge pads, and the internal removable screws of the anti-skid and wear-resistant sponge pad are provided Specifications: Applicable card type: ID card Induction distance: 0-5 (cm) Power: 0 (W) Working frequency: 125 (Khz) Card reading time: 0.2 (s) Model: R20D Color:black Package Included: 1 * access control card issuer Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.