Carbon Dioxide/Temperature/Humidity/Dew Point Meter 0 to 4000ppm(1ppm) 0oC to 50oC 10% to 95%RH (0.1%)
Carbon Dioxide/Temperature 0 to 4000ppm (1ppm) 0oC to 50oC Data Hold Record & RS232/USB
Carbon Dioxide/Humidity/Temp 0 to 6000ppm (1 ppm) 5 to 95%RH 0 to 50oC SD Card Real Time Datalogger Alarm Set USB
6 in 1 Air Quality meter Carbon Dioxide Carbon Monoxide Air Oxygen Air/Temp Dew point +Logger and SD Card