Campbell Scientific always recommends using CF cards carried by Campbell Scientific. Although another CF card might fit and work with a CFM100 or NL115, the CF card might not be rated for the same temperature range as the CFM100 or NL115. In addition, another CF card might not have the same electrostatic discharge (ESD) immunity as the cards tested and carried by Campbell Scientific. For more detail on CF cards, see the “CF Card Information” application note.