Air Quality Monitor Formaldehyde Detector Pollution Meter Sensor Tester Detect & Test Indoor Pollution New House Features: Using ARM chips, most of the world's samrtphone proceors are produced by ARM with 32-bit high-speed proceing performance, which greatly increases the computing speed,more accurate detection and smooth. The hazard degree of harmful gases such as formaldehyde and TVOC isn't a static tracking in order to systematically grasp the health of the Environment. The Air Quality Tester is widely used in homes, offices, enterprises, governments, schools etc. The Air Quality Test Formaldehyde Detector with built-in electric chemical sensors can accurately detect carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC) and particulate matter (PM2.5/PM10) in the air. These readings involve the detection of toluene, harmful chemicals and pollutants in the air. Colored screen, intelligent control , stable, quick, you can get the precise figure easily. Specification: Material: ABS Platic Size: 1.7x2.7x5.9 inch Formaldehyde detection range: 0.000-1.999mg/m TVOC detection range: 0.000-1.999mg/m PM1.0/PM2.5/PM10 detection range: 0-999ug/m Temperature measurement range: 0-50 Humidity measurement range: 20~90%RH Charging time: about 4 hours Life time: abouUSB interface: Type-C interface Input voltage: 5V/1A Working environment: 5-40, Package Includes: 1x Formaldehyde Detector 1x 1200mAh lithium battery 1x USB Charging Cable note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.