BF-831 is RFID identification based controller for proximity card. It is always used to manage entrance security, work place time attendance, overtime working verification and any other situation/ event for the authorized personnel's presence. It can either work standalone without connecting to the PC or be integrated with PC thru RS-232/485 or RJ-45 port. Also, BF-830 can be linked with BF-870 as a reader in Multi door control solution.
RS-232 / PS2: