... to achieve better ventilation effect;* Power supply: Input voltage AC 100-240V 50/60Hz; Inrush current 3A;* Power: < 200W;* Interface: ... to use: Ready to use by plugging the power supply, no bother for assembling yourself.Product advantages* ... every fields.Customersin useGovernment, army, shopping mall, school, power station, transportation division, hotel, tourism, banks, Hospitals, communication ...