Indicator
                              
                              
                                  4 Indicators (1 x System Indicator, 1 x Hard Disk Status Indicator, 1 x Power Indicator, 1 x Alarm Indicator)
                              
                           
                      
                          
                              Audio
                              
                              
                                  1-ch Audio Input (MIC IN); 1-ch Audio Output (AUDIO OUT)
                              
                           
                      
                          
                              Video Output
                              
                              
                                  1 x HDMI, 1 x VGA
                              
                           
                      
                          
                              Alarm Input
                              
                              
                                  4-ch Alarm Input (ALARM IN), Voltage Range: 0 V to 60 V
                              
                           
                      
                          
                              Alarm Output
                              
                              
                                  4-ch Alarm Output (ALARM OUT), Voltage Range: 0 V to 60 V
                              
                           
                      
                          
                      
                          
                              RS-485
                              
                              
                                  2 x RS-485 Interface
                              
                           
                      
                          
                              USB
                              
                              
                                  4 x USB 3.0 Interface
                              
                           
                      
                          
                              Network Interface
                              
                              
                                  5 x 100 Mpbs/1000 Mpbs Self-Adaptive Interface, supporting connecting with switch; 1 x Independent 100 Mpbs/1000 Mpbs Self-Adaptive Interface, supporting network isolation