Out of the box do I need to calibrate my pro for co2? I did a minor adjustment for humidity, but was wondering if I actually needed to do anything with the co2.
We were told out of the box calibration isn’t needed ! 
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This is correct, no calibration needed out of the box. You may want to recalibrate about 6 months after getting the device.
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My pulse pro has always read super high. At ambient conditions where it should read 400 ppm it reads 1006 ppm. I have tried calibrating to 400 but it keeps giving me the high readings. I want to like the pro but at this point it is working as a regular pulse monitor and the $300 co2 controller works better. Any help would me greatly appreciated.
Hey Papaz, there was a bug with co2 calibration that we fixed yesterday. Give it another shot?