M10 Air Quality Monitor for PM2.5 AQI Professional Electrochemical Sensor Detector Real Time Display Feature: 3rd generation particle sensor combined with unique particle swarm optimization algorithm makes particle measurement more accurate and stable. pre-calibrated that provides accurate formaldehyde molecule measurements. Detect a wide range of organic pollutants of VOCs. MULTIFUNCTIONAL & SCIENTIFIC This indoor air quality monitor accurately assesses temperature (in C/F), humidity level, and multiple measures of air quality including concentrations of formaldehyde, total natural & synthetic organic compounds causing most odors (TVOC), and fine particulate matter (PM2.5/PM1.0/PM10) which travel deeply into the respiratory tract, reaching the lung alveoli. PORTABLE TESTING Spot check or leave device on for continuous monitoring of indoor air quality. This easy-to-carry device can help monitor air quality at home, in the car, and in hotel rooms. Package Content: 1 x Air Quality Monitor