Electric fan heater, with PTC heating elemnt, Twin Electrostatic washable dust collector, Remote control, ... off when side covers open Safety design 2Tip-over switch shuts offer when unit tips overSafety design 3Auto thermal cuts ... /smoke as small as 0.03 micronsMaintainencewash electrostatic dust collector with water, or in dishwasherQuiet45dBTimer1,2,4,8 hoursRemote controlYesUser pannelLED ...