Feature:1. NON CONTACT: Card reader is a non contact intelligent card reader designed using non contact RF technology. A universal card reader that can be easily plugged in and out during use, without the need for external power supply or user loading of any driver programs. The reading is stable, accurate, and reliable.2. QUICK RESPONSE: Fast reading, the speed less than or equal to 0.2S, maximum reading and writing distance up to 15cm, card reading interval time less than or equal to 0.2S, supporting IC card reading and writing.3. FINE WORKMANSHIP: Using IC USB interface. The interface wire is wrapped in ABS material externally, which is scratch resistant and durable. The surface is frosted, and is not easy to slip and has better transmission efficiency.4. STRONG COMPATIBILITY: Stable performance and strong compatibility, using microelectronic RF modules, for Windows, for LIUNX, for Android and other systems plug and play, without the need to install driver software.5. EASY TO USE: Card reader is equipped with a built in buzzer design, with a sound of up to 20dB, providing effective reminders. The LED light design is red for standby mode and green for card swiping mode, making the reader easy to operate and convenient for beginners to use.Specification:Item Type: NFC Reader WriterMaterial: ABSWorking Current: 100mAWorking Voltage: 5VPower Supply: 1WT5577 Card Frequency: 125KHZUID Buckle Frequency: 13.56MHZCard Reading Time: 0.2sSensing Distance: Approx. 0 to 15cm / 0 to 5.9inCommunication Interface: USB interfacePower Supply Method: USB power supplyApplicable Cards: MF S50, S70, etc. 14443ACompatible Systems: For Windows, for LIUNX, for Android and other systems.Package List:1 x Card Reader 5 x T5577 Card 5 x UID Buckle 1 x USB Data Cable