... elder, sick person, pregnant lady. Parameters of room-used air cleaner SeriesKD room-usedModelKD200MKD400MKD900MKD1200MFormStand-aloneProductonwheelProduct on wheelProduct on wheelAir flow ... with 220VAC powerKeep a space of > 30 cm for air inlet;Inlet filter needs to be regularly washed, dry and then ... for productsIn case of the striking sparks, the inlet filter screen might not be properlyinstalled ...