The Vertiv Liebert PSI5 UPS (PSI5-1500RM1201UN) is designed to protect electronic devices from downtime and damage that can be caused by power outages and fluctuating utility power. The 1U rack mount UPS is ideal when rack space is limited. Automatic voltage regulation (AVR) addresses utility fluctuations keeping your system supported and extending battery life. Pure sine wave output on battery ensures the best quality of power for your equipment. This line interactive UPS ensures availability of critical IT applications in network closets and small data centers. This battery backup allows orderly shutdown of critical equipment. This model includes the Vertiv Liebert IS-UNITY-SNMP communication card to remotely monitor up to 50 UPS systems through the free Vertiv Power Insight Application. It has a 2-year Vertiv UPS warranty with optional extensions for up to 5 years total coverage.