The ATEN™ Professional Online UPS is an exceptional and innovative electrical apparatus that provides emergency power to a load when the input power source, or the mains, fails. The basic technology of an online UPS is the same as in a standby or line-interactive UPS, however, the ATEN™ Professional Online UPS provides a much greater current of AC-to-DC battery-charger/rectifier where the rectifier and inverter are designed to run continuously with improved cooling systems. True double-conversion – Output power factor is 1 (maxium), which means all of the power supplied is being used for productive work and makes work the most efficient. Programmable power management outlets – Users can easily and independently control load segments. During power failure, this feature enables users to extend battery time to mission-critical devices by shutting down noncritical devices. Emergency Power Off function (EPO) – EPO connector at rear panel allows emergency UPS Power Off from a remote location. SNMP + USB + RS-232 multiple communications – Allows either USB or RS-232 communication ports to work with SNMP interface simultaneously.