Something You Need to Know Before Using lt The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Upgraded Indoor PM2.5/10 Detector Our upgraded multifunctional air quality monitor is specially designed to give you a comprehensive understanding of the air quality around you Previous page Next page 1 PRECISION MONITOR 2 LED INDICATOR 3 WHY PM2.5 DETECT 4 EASY TO USE 5 Why CEM? NDIR Sensor PM2.5/10 Monitor adopts an NDIR sensor, which can measure the concentration of carbon dioxide more accurately. It's an essential part of a good air quality monitor. Air Vents The hollow back case design, easy for airflow in and out to touch the NDIR sensor, detect the air quality value accurately Air pollution is a major threat to human health and it is important for you to know the quality of the air around you. CEM air quality detector can detect a wide range of harmful gases, for the health of you and your family, You should own it. The necessity of Air Quality Monitor Why need to monitor PM2.5/10? PM 2.5, which are tiny particles that we can breathe in. They come from things like cars, factories, fires, homes, and buildingsPM 2.5 can harm our health and cause problems like heart disease, lung cancer, asthma, stroke, diabetes, and COPD. CEM Particle Counter Series for Envirmoment meters DT-968 Add to Cart DT-9681 Add to Cart DT-96B Add to Cart DT-9850M Buying Options DT-9851M Buying Options Customer Reviews 3.2 out of 5 stars 8 3.2 out of 5 stars 7 3.1 out of 5 stars 3 — — Price $119.99$119.99 $229.00$229.00 $299.00$299.00 — — PM2.5/10 ✔ ✔ ✔ ✔ ✔ Particle Channel 2.5μm/10μm 2.5μm/10μm 2.5μm/10μm 0.3μm/2.5μm/10μm 0.3μm/2.5μm/10μm Particle Mass Concentration 0-2000μg/m³ 0-999μg/m³ 0-999μg/m³ 0-500μg/m³ 0-500μg/m³ Analog bar indicator ✔ ✔ ✔ ✘ ✘ Temperature ✔ ✔ ✔ ✔ ✔ Humidity ✔ ✔ ✔ ✔ ✔ Blutooth ✘ ✘ ✔ ✘ ✘ HCHO ✘ ✔ ✘ ✘ ✔ CO2 ✘ ✔ ✘ ✘ ✘