Seeed Grove Carbon Dioxide Sensor MH-Z16

Does anyone know why some software libraries for the MH-X16 sensor use the command 0x9C to request the CO2 concentration while others use 0X86? Only the 0X86 (Read gas concentration) command is documented in the spec sheets. It looks like the 0x9C command gives you a three byte wide result whils the 0X86 gives you a two byte result along with the value of the internal Temperature sensor (looks like you have to subtract 40 from the Temp as well). I would like to get the value of the internal temp sensor as well as the CO2. Does anyone know where I can find more info on the 0X9C command? Thanks

Too bad the average consumer doesn't care about CO2 levels. I'm breathing, aren't I? Of course there's going to be CO2. I don't care as long as there's oxygen too. Maybe they should make it detect carbon monoxide as well as dioxide, then somebody might actually buy it, even if it cost more. I don't even know why anybody would need a CO2 detector. Who exactly is the target demographic of this thing? I imagine anyone doing some kind of specialized work requiring a CO2 detector, probably isn't going to be looking for one on Massdrop. I'm pretty sure most people on massdrop are looking for cool stuff to buy on impulse, and this really doesn't fit that description. Not surprising at all nobody is buying, this is just a waste of space on Massdrop.

Sensing the presence of carbon dioxide within the range of 0-2000ppm.