... RF Model:HM-02 HandsetThe reader is a combination of RFID (radio frequency identification) technology, bar code technology, ... Micro SD slot, Charging port, USB1.1 host interface, RFID module antenna external PortKeyboard26 key NumericTouch-screenQuick response <10ms, ... 128 bit WEP data encryption, support for WPA and other security mechanismsProtocol supportSupport ARP, DHCP client, DNS, FTP client, ...