... ,CE,FCC certificate 4,offer free SDK Brief Description *Work Frequency: 13.56Mhz*offer free SDK,accept paypal payment for ... Wigand , RS485*15 years experience in RFID field*Sample available, free SDK, tech support Application *Access control system*Attendance System*Industrial ... ,PBOC*OS: Windows 98,Me,2K,XP,2003 & Unix and Linux *Weight: 450g *Dimension: 170mm * 84mm * 75mm Product Detail picture ...