Feature: 100 Handheld shape design, comfortable hand feeling. 2 buttons compatible with simple operations. Standalone operation, no need to connect with computer / PC, easy to use. Built-in individual LED lights and buzzer indicator. Reading distance is 0 - 6cm. Can only copy 125KHz RFID card. Compatible with T5577, CET5200, EM4305 and EN4305. How to Use: 1. Switch on, power led flashes one second. 2. Put RFID Card in read area. 3. Press read button, read led flashes with beep sounds. 4. Put RFID card to be wrote in read area. 5. Press write button, write led flashes with beep sounds. 6. Copy done. Card Copier Specifications: Frequency: 125KHz Power Supply: 2 AAA battery.it can be use 20,000 times. Battery not included Reading Distance: RFID Key tag/2.5cm; RFID Card/6cm Dimensions: Approx. 4.72 2.76 1.18in / 12 7 3cm Package Information: Package Size: Approx. 5.31 3.27 1.57in / 13.5 8.3 4cm Package Weight: Approx. 3.17oz / 90g Card Specifications: T5577 chip which compatible with EM4305 chip Size:3.5 x 2.5 x 0.5cm Material: Plastic Operation frequency: 125Khz Read and rewrite key tags Detecting distance: 0-5cm Application: It applies to access control, hotel locks, staff attendance and school campus access and payment control, identification and security systems, parking lot entry and payment, social security management, transportation payment, municipal and ancillary service payment,etc.