Display Instructions Air Quality Indicator The indicator will display green, yellow, orange or red according to the PM2.5 value. Green Yellow Orange Red 1–35 μg/m 3 36–75 μg/m 3 76–150 μg/m 3 >150 μg/m 3 Mode Indicator Light Adjustment Button Mode Switch Button Automatic: Automatically switch modes according to the indoor air quality. Child Lock Indicator Filter Exhaustion Indicator Wi-Fi Indicator Sleep: Ultra-low noise for a comfortable sleeping environment. Power Button Manual: Set and save the coverage area in the app to adjust the purifying efficiency. 4