Features: 1.HEPA filter with high efficiency 99.97% 2.Activated carbon filter remove smoke, odor etc. ld-catalyst filter kill germs, bacteria etc. 4.Ionizer good for health 5.Remote control 6.Timer setting 7.Fan speed setting 8.Memory function to record latest data Technical date: 1.input voltage: AC 220V-240V 2.Frequency: 50 / 60Hz 3.Consumption power: 4.Noise level: 5.Negative ions: 2.8 million / cm3 (10cm far from the wind exit) 6.Rate of absorbed CO2: >/=50% PPM 7.Applicable area: 25 - 45 square meter 8.remote control distance: 9.Operating condition: Temperature: -10~55 Humidity: 10.Power of motor: