... person, control board and standard RS232, RS485 serial communication ports and RJ45(TCP/IP) network port, ... the series are top choice for open and mass flow RFID applications, such as: Library Entrance Control, Access Control ... meters Interface RS232,RS485,RJ45(TCP/IP) network interface, etc. Work mode FHSS or Fix ... , such as: Library Entrance Control, Access Control, Process Control, etc.