See which card reader formats AC Nio is compatible with here: https://know.aiphone.com/access-control-application-notes/ac-series-supported-card-formats
AC Nio Data Sheet
AC 26-bit Credential Data Sheets
AC 40-bit Credential Data Sheets
AC Key Data Sheet
AC Nio Data Sheet
AC Nio Admin Data Sheet
AC-10K-1G Data Sheet
AC-10K-M Data Sheet
AC-2DE Data Sheet
AC-2DM-B Data Sheet
AC-2DM-W Data Sheet
AC-2DMBOX Data Sheet
AC-BT-10K Data Sheet
AC-BT-M Data Sheet
AC-C Data Sheet
AC-IOE Data Sheet
AC-PROX-1G Data Sheet
AC-PS1267 Data Sheet
ACS-2DR Data Sheet
ACS-2DR-C Data Sheet
ACS-ELV Data Sheet
ACS-IO Data Sheet
AC-CA1 Data Sheet
AC Series Access Control A&E Specifications