EXTECH CO-100 Desktop Indoor Air Quality CO2 Monitor
Measures Carbon Dioxide ( CO2) , Air Temperature and Humidity
Features : 
Checks for Carbon Dioxide ( CO2) concentrations
Maintenance free NDIR ( non-dispersive infrared) CO2 sensor
Indoor Air Quality displayed in ppm with Good ( 0 to 800ppm) , Normal ( 800 to 1200ppm) , Poor ( > 1200ppm) indication
User programmable Visible and Audible CO2 warning alarm
Measurement ranges: 
CO2: 0 to 9, 999ppm
Temperature: 14 to 140° F ( -10 to 60° C) 
Humidity: 0.1 to 99.9% RH
Displays Year, Month, Date, and Time
Max/ Min CO2 value recall function
Applications : 
Monitor air quality in schools, office buildings, greenhouses, factories, hotels, hospital, transportation lines and anywhere that high levels of a carbon dioxide are generated
Specification : 
Carbon Dioxide ( CO2) : 0 to 9, 999ppm
Resolution : 1ppm
Temperature : 14 to 140° F ( -10 to 60° C) 
Resolution : 0.1° F/ ° C
Humidity : 0.1 to 99.9% 
Resolution : 0.1% 
Dimension : 4.3 x 4.1 x 2.4 " ( 110 x 105 x 61mm) 
Weight : 8.1oz ( 230g) 
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