Formaldehyde detector professional measure formaldehyde air quality monitor PM2.5/TVOC/HCHO temperature and humidity [9-in-1 Multifunctional Quality Monitor] Newly upgraded indoor quality monitor that can accurately evaluate multiple quality indicators, including formaldehyde (HCHO), PM2.5, PM1.0, PM10, HCHO, TVOC, temperature, humidity, AQI, date/time. It is very important that you know the quality of where you live [Portable Detector] Spot check indoor quality anywhere or leave the device on for continuous monitoring, this easy-to-carry quality detector can help monitor the quality of home, kitchen, bedroom, office, school, car, hotel, travel , camping, etc., especially where there are babies, children and pregnant women. [Easy operation] This monitor can be easily operated by pressing the function button, and the updated user manual is very simple and easy to understand. The smart tester can monitor the changes of the environment for a period of time that you care about, and you can take it with you to monitor quality. At the same time, you can set a formaldehyde standard value. If the concentration is higher than the standard value, the device will alarm. Input Voltage: 5.0V/1000mA Charging Temperature: -10-45 Formaldehyde Test Object Range: 0-1.999mg/m3 Test Technology: Semiconductor Sensor Sample Type: Diffusion Concentration Unit: mg/m3 Test Range: 0.000-9.999mg/m3 Test technology: Semiconductor sensor Sample type: Diffusion Concentration unit: mg/m3 Test time: 5 minutes PM2.5/PM1.0/PM10 test Test particle number: 2.5um, 1.0um, 10um Test particle quality: PM2.5, PM10 sampling time: 3 seconds Test: Concentration (per liter) Test range: 0-999ug/m3 Operating environment pressure: 86Kpa-106Kpa Relative humidity: 20%-85% Test temperature: -10-45 Storage temperature: -20-50 Material: Plastic Color: Black Package Contents: 1 * Quality Monitor only includes the above package content, other products are not included. Note: Lighting and different monitors may cause the item color in the pictures to be slightly different from the actual item. Measurements allow +/- 1-3 cm.