... and upload to the device through TCP/IP, RS232/485 communication. The USB-host is used for data download and upload, including ... user to operateSpecifications: ID card Capacity30000Transaction Capacity50000CommunicationTCP/IP, RS232/485, USB-HostAccess Control Interface for3rdparty electric lock, door sensor, exit button ... : 1.0Kg RFID READER access control system support TCP/IP, USB communication