True on-line technology provides all power protection
Pure sine-wave output with less than 3 % THD
Fully digitized microprocessor controlled
Cold start function (DC power on)
Lightning and surge protection
Short circuit and overload protection
Advanced battery management (ABM)
Automatic battery charge in UPS off mode
Battery replacement warning
Automatic diagnostics & battery check
Schedule shutdown & reboot
RS-232 communication port with monitoring software
Load segmentation receptacles controllable *
Fan speed auto control when loads varies
Extended back up time with battery pack
Network/ fax / modem surge protection
History record of power failure events 
UPSMON plus software monitoring 
Emergency power off function
Optional extension battery pack 
Support USB communication
High efficiency mode selectable 
Battery remain time  display
Multiple language LCD display
On line output voltage selected
LCD display front panel 
Optional SNMP card slot
Wide input voltage range
Power factor correction
Manual bypass setting
Free run mode setting
EMI / RFI noise filter

* means function available only for model VGD -700~3000