Extech IAQ320 Air Quality Meter/Datalogger with PM2.5

Simultaneously measure and display key indoor air quality parameters: PM2.5, CO2, Air Temperature, Relative Humidity and Health Index Large LED display readings can easily be seen across the room 2 side tri-color LED bars visually indicate PM2.5 and CO2 levels Programmable data sampling rate plus Hi/Lo limits with visual and audible alarm Store up to 12,000 records with the ability to export data in CSV format