When power is interrupted, or fluctuates outside safe levels, a UPS will instantly provide short term backup power for plugged-in, sensitive equipment such as your servers, network switch, routers/modems,etc.
You can monitor the status and performance of UPS. With UPS network management card, it can enhance the management capabilities of your UPS such as shutting down your server in power supply failure, email notice alert, etc.
Security and environmental monitoring is also important for your server conditions. Most people are aware that their servers need to be maintained within temperature and humidity parameters in order to achieve optimal performance and reduce errors or malfunctions.