SPER Scientific Digi & Alarm Thermoms

SPER Scientific Air Quality Meter, Indoor, 8-1/2 X 3 X 2-1/2 In, -10 To 60c/14 To 140f At Range, 0 To 100% Rh Range, -13.3 To 60c/8 To 140f Dew Point Range, -73.4 To 60c/-100 To 140f Wet Bulb Range, 0 To 5000 Ppm Co2 Range, 280g Weight, With Hard Carrying Case, Four Aa Batteries, Ideal For Monitoring Indoor Air Quality In Crowded Public Spaces With Potentially High Levels Of Co2, Simultaneous Display Of Co2 Level, Humidity And Air Temperature, Audible Co2 Threshold Alarms, Minimum/Maximum/Average, Hold Function, Computer Interface - SPER