CyberPower OLS1500EA is a high-performance UPS featuring online double-conversion topology, which provides seamless Pure Sine Wave power for mission-critical devices, such as NAS and servers, DVRs/surveillance systems, transportation and infrastructure, and emergency systems. It's typically integrated in the back office, server room, and data center environment.The UPS is designed with a color LCD panel for users to monitor power system and configure settings easily. This model is generator compatible and also adopts ECO mode to conserve power. The product can be connected to Emergency Power Off (EPO) switch, which allows users to shut off UPS immediately during emergency. The variable speed fans provide automatic thermal management based on power load to reduce noise and provide greater comfort for users.