Monitor, USB Data Logger

We are offering monitor, usb data logger. The monitor/controller is special design to monitor and alarm co2 level, also provides up to one 0~10vdc output and one on/off relay output to control a fan or a co2 generator.
an data logger is designed inside, which can record co2 measurements more than 115 days and can be saved the data via a usb disk.
The memorial co2 monitor/controller not only very easily to be used as a co2 monitor and controller, but also as a recorder of the measurements.
F2000iaq-co2-31xxu series application in schools, kindergartens, office buildings, greenhouses and so on.
features
 real-time monitoring carbon dioxide (co2) measurements during 0ppm to 20,000ppm range
 optional real-time monitoring temperature from -20℃ to 60℃ and relative humidity from 0 to 100%rh
 non-dispersive infrared (ndir) co2 sensor with self calibration, 15 years lifetime
 the 3-led indicator lights indicate three co2 measured ranges
 led lights brightness adjustable
 provide 1x0~10vdc output for alternative linear
co2 measurement and pid control output
 provide 1x on/off dry contact output to control alternative a ventilator and a co2 generator
 an internal data logger is used to record co2 measurements as well as optional temperature and rh% measurements.
 with super large capability memorizer, it can save data of up to 115 days
 provide the software to preset the sampling time, read and record co2/temperature&rh levels on pc
 post the data from the internal memorizer by any usb disk, and copy the data to a pc
specifications
gas detected carbon dioxide (co2)
sensing element non-depressive infrared detector (ndir)
co2 ndir life 15 years
accuracy@25℃(77℉) ±40ppm + 3% of reading
stability.