Night sensing mode is a new technology especially designed for your bedroom. Be reassured of constant air quality monitoring and clean air delivery while you sleep. It is quiet as whisper to help you and your family sleep better. Key Features: Superior Purification that can be applied to max 63m2 room Indoor PM2.5 levels can increase far above local guidelines because of outdoor pollution or daily activities like cooking, cleaning etc. The smart air sensor can detect PM2.5 levels and boost the air purifier’s speed to deal with the pollution. Night sensing mode is developed especially for your bedroom; The air purifier rapidly prepares your bedroom air for sleep and constantly monitors your bedroom air quality, delivering clean air while you sleep. The healthy air protect alert lets you know promptly when it is time to replace the filter. If the filter is not replaced promptly, the appliance stops functioning - to avoid ineffective purification. So you are assured of healthier air always. The color ring on dashboard provides a clear view on air quality by 4-step color, ranging from blue (good allergen & particle level) to red (bad allergen & particle level). Model AC1215 Length 54.10 Product Height (cm) 21.1cm Product Width (cm) 32