Product name:air quality meter Test item:HCHO, TVOC, PM2.5, PM10 Test range:0-1.999mg/m3(HCHO), 0-9.9999mg/m3(TVOC) Testing time:5-7 minutes Dimension:150*70.8*43.6mm Power supply:lithium battery Capacity:2200mAh Display mode:LED Weight:188g Color:Grey Show More