SentryPlus Monitor SentryPlus Monitor enables you to control and configure SentryPlus through the drop down menu and dialog boxes. It also allows you to monitor the UPS through the Main Screen. SentryPlus Monitor need not to reside in memory, the execution depend on the user's requirement. This can save precious system resources for you. After finishing the SentryPlus installation, SentryPlus Service automatic load into memory and runs once the UNIX operating system startup. To run the SentryPlus Monitor, all you have to do is typing "./monitor" in the installation directory.