1Set Alarm: You can set the alarm value according to your requirements for air quality, meeting your different needs. 2Switchable Scale: The temperature display can be switched between degrees Celsius and Fahrenheit, more convenience 3Five Grades: This air quality monitor indicates the air quality with 5 grades, which is easier for the public to understand. 4Wide Range: This air quality monitor supports detecting PM2.5 concentration, formaldehyde, acetaldehyde, sunflower aldehyde, methane, benzene, toluene, xylene, styrene, phenol, alkanes, decane, ethanol, ketone siloxane, acetone, isoprene, grease, carbon monoxide, etc. 5Wide Application: This air quality monitor is suitable for bedroom, living room, kitchen, office, car, school, hotel, campground and other environments. Item Type: Air Quality Monitor Material: ABS Product Model: HY-62 Voltage: DC 5V, 9V Rated Current: 100mA Rated Power: 0.5W Detection Range: PM2.5 Concentration, Formaldehyde, Acetaldehyde, Aldehyde, Methane, Benzene, Toluene, Xylene, Styrene, Phenol, Alkanes, Malethane, Ethanol, Ketone Siloxane, Acetone, Isoprene, Grease, Carbon Monoxide, Etc 1 xAir Quality Monitor 1 x Charging Cable 1 x User Manual