This 256KByte FLASH DataCard is designed for use with 9300 series NRG Loggers. Non-volatile industry standard PCMCIA FLASH technology ensures that your valuable data cannot be accidentally erased, disrupted or altered. Unlike volatile RAM cards, FLASH DataCards do not require a battery to retain their data, and they are not susceptible to data loss or corruption due to static discharge. Data is transferred from DataCards to your PC's hard drive using the TermReader.