EXTECH CO220 Desktop Indoor Air Quality CO2 Monitor

Features: Displays Carbon Dioxide ( CO2) concentrations Maintenance free NDIR ( non-dispersive infrared) CO2 sensor Carbon Dioxide reading displayed in ppm with six facial icons indicating indoor quality levels ( illustrated below) Audible CO2 warning alarm when concentration level exceeds high or low user set point Displays Year, Month, Day, and Time Min/ Max CO2 value recall function Calculates Dew Point and Wet Bulb values Calculates statistical weighted averages of TWA ( 8 hour Time Weighted Average) and STEL ( 15 minute Short Term Exposure Limit) lps% ( Liters per second per person) and cfm/ p ( cubic feet per minute per person) Automatic Baseline Calibration function Manually store/ recall 99 readings Measures Carbon Dioxide ( C02) , Air Temperature and Humidity, plus calculates Dew Point and Wet Bulb. User settable high/ low alarm function is perfect for monitoring air quality and insuring proper air ventilation in conference rooms, schools, greenhouses, factories, hotels, hospitals and anywhere that high levels of carbon dioxide are generated. Includes: Extech CO220 Desktop Indoor Air Quality CO2 Monitor