Detailed Product DescriptionFeatures: 
Automatic Voltage Regulation 
Protection against Brownouts & Over voltages 
Short Circuit & Overload Protection 
Dual meters indicate line voltage and regulated voltage 
LED indicators to show status of Working, Unusual and Delaying 
Selectable Delay Time 
Built-in transformer:square transformer 
Surge, Spike and Lightning Protection* 
Specifications: 
Input:AC 140V~250V 
Output:AC 220V±6.8% 
Frequency:50Hz/60Hz 
Delay Time:2~3 Mins 
Power:4000VA/5000VA/6000VA 
Physical: 
Measurement(mm)(Height*Width*Depth):290*270*130 
N.Weight(kg):12.0