HID iCLASS Smart Key Fob Unprogrammed - Pack of 100 | 2k Bit | 2050CNNNNHID iCLASS Smart Key Fob Unprogrammed 2k Bit RF programmable, 13. 56 kHz, black with grey insert, customer specified ID Numbers 2k Bits (256 Bytes) with 2 Application Areas iCLASS 13. 56 MHz read write contactless smart key technology No Printed Key Numbering Can be placed on a key ring or clipped to a lanyard for convenient entry Molded plastic enclosure provides durability in harsh environments