Online RFID card reader, RD100 is available in USB and Rs232 interface Proximity. Online RFID card reader has 125KHz readers are high performance proximity readers featuring long range and small dimensions. Online RFID card reader run from any voltage from 5 to 12.5 VDC and feature high read range at as low as 5 volts making it ideally suited to a wide variety of applications. It is available in versions as small reader module for OEM applications up to 15cm read range, Table TopModel Cards, Two types of cards are available Standard Clamshell cards used in most proximity card installations. The salient features of the Online RFID card reader: