Features 1、Accurate Detection: This air quality detector uses the laser scattering principle to accurately measure the number and mass of different particle sizes of laser dust per unit volume in the air. 2、Diverse Function: This air quality tester has a compact design with many functions, high testing accuracy, speed, portability and ease of use. 3、Real Time Result: The air quality tester can measure the number of dust particles in 6 particle sizes at the same time in one sampling, and the results can be recorded in real time, which is very convenient for studying, testing and evaluating various clean environments. 4、ABS Housing: The housing of the air quality detector is made of ABS material, which has outstanding cold resistance, abrasion resistant, toughness, etc. 5、Wide Application: The air detector can be widely used in microelectronics, medical and pharmaceutical, biochemical products, food hygiene, cosmetic products, accuracy machinery, fine chemicals and other sectors. Specification Item Type: Air Quality Monitor Material: ABS Particle Detection Range: 0.3μm to 10μm Particle Size: 0.3μm, 0.5μm, 1.0μm, 3.0μm, 5.0μm, 10μm Counting Efficiency: 50% at 0.3μm, 100% at >0.5μm (in accordance with ISO 21501 4 and JIS) Particle Size Resolution: <15% at 0.5μm (in accordance with ISO21501 4) Sampling Flow Rate: 2.83L/min (0.1ft³) Tolerance: 5% (2,000,000Particles/ft³) Battery: Built in lithium ion battery 1 x 3.7V 2000mAh (Included) Operating Temperature: 0°Cd to 50°C Operating Humidity: 10%RH to 90%RH No frost condensation Storage Temperature: -20°C to 60°C Storage Humidity: 0 to 95%RH no frost condensation Package List 1 x Air Quality Monitor 1 x USB Cable 1 x Instruction Manual 1 x Storage Box