HID iCLASS Smart Key Fob Standard iCLASS - Pack of 100 | 2k Bit | 2050PNNMNHID iCLASS Smart Key Fob Standard iCLASS 2k Bit RF programmable, 13. 56 kHz, black with grey insert, customer specified ID Numbers Sequential Matching Encoded Printed (Inkjetted) 2k Bits (256 Bytes) with 2 Application Areas iCLASS 13. 56 MHz read write contactless smart key technology Can be placed on a key ring or clipped to a lanyard for convenient entry Molded plastic enclosure provides durability in harsh environments