AC/ DC UPS Systems; PWM controlled, IGBT technology, microcontroller controlled, ONLINE UPS System * * * Made in Turkey UPSon 300 High series UPS Systems, PWM controlled, IGBT technology, microcontroller controlled, sinusoidal waveform, ONLINE topology and parallel configurable devices... Features : Output isolation transformer Up to 91% efficiency Static by-pass External REPO switch input 5 control buttons LCD alphanumeric display 3 mikrocontrollers for rectifier , main control system, parallel management 128 events alarm memory ( 4000 alarms) Clock and calender ( battery supported) Advanced battery management controls charge system battery test High performance at nonlinear loads Dry contact simulation function Dial-up modem connection and setup Custom input voltage and frequency ranges International standarts compatibility SNMP( Simple Network Management Protocol) communication 2 years warranty 10 years spare parts support ISO9001, ISO14001, CE, GOST certification Optional MODBUS adaptor