External Connectivity Product
      Sena's external connectivity products are single-port
      and multi-port serial to Ethernet communication devices that enable
      existing devices with a serial port to connect to the Internet quickly and
      cost-effectively. 
      Application Diagramm 
         
    
        
          | Product | 
          Ports | 
          Serial 
            Interface | 
          Network Interface | 
          Security Level | 
          Protocols | 
         
        
          | HD1320E | 
          1 | 
          RS232 DB9 | 
          10Base-T | 
          password | 
          TCP/IP, DHCP | 
         
        
          | LS100 | 
          1 | 
          RS232 DB9 | 
          10Base-T | 
          ID/password, IP Filtering | 
          TCP/IP, UDP, DHCP, Telnet, PPPoE | 
         
        
          | PS100 | 
          1 | 
          RS232/422/485 DB9 | 
          10Base-T | 
          ID/password, IP
            Filtering, Data Encryption | 
          TCP/IP, UDP, DHCP,
            Telnet, DNS, SMTP, PPPoE | 
         
        
          | PS200 | 
          2 | 
         
        
          | PS400 | 
          4 | 
         
        
          | SS100 | 
          1 | 
          RS232/422/485 DB9 | 
          10Base-T/100Base | 
          ID/password, IP Filtering, Data
            Encryption | 
          TCP/IP, UDP, DHCP, Telnet, DNS, SNMP, PPPoE, HTTP, FTP, SMTP | 
         
        
          | SS110 | 
          1 | 
         
        
          TCP/IP, DHCP, Telnet,
           
          SSH, DNS, Dynamic DNS, SNMP,
           
          PPPoE, HTTP/HTTPS
           
          SMTP, NTP | 
         
        
          | SS400 | 
          4 | 
          RS232/422/485 RJ45 | 
          10Base-T/100Base | 
          ID/password, IP Filtering, Data
            Encryption | 
         
        
          | SS800 | 
          8 | 
         
        |