New features in NetBotz Rack Monitor 250 firmware version 6.4.6:

RADIUS rack access authentication 
Rack access lock users can now be authenticated using RADIUS. You set rack access RADIUS authentication in the Configuration > Device > Rack Access > RADIUS option.

Support for iCLASS rack access cards 
The NetBotz 13.56 MHz Handle Kit (NBHN1356) now supports 13.56MHz iCLASS proximity cards.

For more information, see the release notes.