The AS-APRD1/PAP1 is a USB Radio Dongle & Software from Assa Abloy. The Aperio Programming Application is the software tool used to set up and programme Aperio based products. Using the software the installer simply plugs in the USB radio dongle to the PC to communicate directly to the Aperio lock via the Communication Hub. The software has an encrypted installation data base that can be used to manage any number of sites.