Temp, Humidity CO2 sensor and library.

This library is great! I am looking through the data sheet and the library and I see there are options to show Light and/or LED intensity. Which is called using "O". How can I get that to print to serial?

second question for KawasakiZx10r. I downloaded your .ino file and it doesn't print any data just the commands for H Z and T. Is there more I need to do to make use of your script?

Thanks for all the hard work you have put into this.