Connecting to a computer PC (Windows) via RS485 to RS232 adapter (not included). You don't have to attach it to a computer in order to use it, set it up or program it.  It can store 25,000 records when standalone, and the record will not disappear even when the unit is not powered for 10 years or more!     It can support access control.  You can set the door to open at different time and by certain number of people.  It will raise an alarm when someone tries to destroy it or wrongly close/open the door that violates the pre-programmed instructions in the console.  It supports RS485 and RS232 (via RS485/RS232 converter  not included) communication interface to connect to a computer PC.  The maximum number of this console that can connect to a computer terminal is 254 units.  When connected to a computer terminal, the computer terminal with privileged password can remotely change the setting in any of the access controllers that is connected to it.  It shares many similar functions as our fingerprint