Tower Features: •True Online Double Conversion •Wide input voltage range •Input power factor correction 0.98 •50Hz/60Hz frequency converter mode •Programmable power outlets •Emergency power off function (EPO) •Optional Eco-mode operation for energy saving •Generator compatible •Backup time for all models is easily extended by simply plugging additional battery banks •Battery banks are available with internal charger to enable fast recharge even with large battery banks •USB, RS232, SNMP and AS400 multiple communications availalble •Extendable maintenance bypass available for all models