SentryPlus Monitor Main Menu The Main Screen has a menu bar at the top with 4 main options: 1. System: This menu allows you to set the SentryPlus and computer parameters. 2. Control: This menu allows you to set UPS buzzer, outlet, test ... 3. View: The View menu allows you to see the real-time values and history event or history data. 4. Help: The Help menu allows you to access the online help system.