AZ-Instrument - Model 77535 -CO2/Temp./RH Meter

High CO2 measurement accuracy, Low drift portable meter checking poor indoor air quality in office, Triple display 3 parameters simulatneously : co2, temperature and r.humidity and display air/dew point/wet bulb temp. By selection, Warning carbon dioxide level, Big lcd display with high resolution, Design with ndir (non-dispersive infrared) waveguide technology high performance low drift sensor, Manual calibration is recommended