CO2 Meter Indoor Air Quality Monitor

This is great product. I checked the accuracy with more expensive machine and the result was same.I use two in my Den and bedroom.

If I didn't already have four of these CO monitors placed around the house, I would think this was a great little instrument.For the past week or so, I've been moving this into the different rooms that I am monitoring for air quality. For a full day (or longer) it sits right next to another CO monitor, but it consistently reads around 400 to 600 ppm higher than the others.I've tried several times to follow the calibration instructions, but they're way over my head.The next time that my grandson (computer tech) comes over, I'll ask him if he will calibrate it for me.

This seems like a great well made desktop sensor for some one who cares primarily about functionality. My goal was to use this on my desk while working to monitor C02 levels. In this regard the history view on the LCD is quite useful. The color of the back light changing with CO2 ranges was a nice touch though it could be a bit bright at night (there is a feature to turn off the back light entirely or between 10pm and 6am).It would have been nice to have the USB cord come out the back (though doing so would prevent this from being wall mountable), a time which persisted when it was unplugged and moved, and a more modern look. However I'm not likely the demographic they are targeting with this.As far as accuracy I'm not able to really access that accept that CO2 measurements went up when the windows were shut, went down when the windows were open, settled to what would be expected for outdoor CO2 levels. It also seemed pretty consistent. Relative humidity and temperature matched my in wall Mysa thermostat exactly.This device consistently measured higher C02 levels than the MYWHITENG monitor as time progressed with low or no ventilation which I'm inclined to believe is more accurate but as I said I have no way to test this.(In the photos you'll see the IAQ CO2 monitor and the MYWHITENG C02 monitor, as well as the user manual for the IAQ CO2 monitor)

This is astoundingly bad--there are a few (important) setpoints the user can change, but these changed settings are lost whenever the unit is unplugged or the power goes out!

Carbon monoxide is the one that kills people without warning. This is a carbon dioxide detector, which is a detector of what we exhale when we breath. It is what plants breath in.This device measures air quality, not safety. When it turns yellow, you need to look at adding fresh air. When it turns red, you definitely need more fresh air added to your room.This device is plug and play. USB jack needs an adapter to plug into a regular outlet.With no battery backup, everything is cleared when you unplug. This meant my husband could measure the air in each kid's room without too much trouble. Plug it in and it starts measuring. Give it 5 minutes to balance out and I think you have a good reading.I put it on the kitchen bar. The plastic case it came on was a nice stand because it gave me a slot to put the instructions in. As each person came in and said, "what's that?" I told them the instructions were behind it. Feel free to have a look. Everyone took a turn poking at it.When the monitor turned red, we were trying to get fresh air into the room, so I turned off the gas stove for cooking (thankfully done). We opened windows. We turned on fans. Trying to get the air quality better was easier said than done.So, this morning, I called the non-emergency fire department phone number. They came out and checked for Carbon Monoxide. There numbers were quite different that what was on our display. The guy in charge looked at the others and asked if they saw the "two" on the display. It was then that everyone caught on to the fact that this was a dioxide, not monoxide detector. He had two new firemen on his team so he thanked me for the training opportunity. I thanked him for coming out and easing our minds.While there, the firemen checked the carbon monoxide levels of the water heater in the garage and the HVAC in the attic. All is good and we all had a good laugh.

There is a variety of air quality monitors such as for particulates, etc.. This one specifically measures CO2 gas levels. This type of monitor has grown in importance recently as a ventilation assessment tool. For instance, a high CO2 level where people congregate indicates a poor ventilation situation where airborne disease can more readily transmit.The product description is thin on details. It does not include a power adapter but includes a cable for power from any standard USB 5 volt jack. While intended for desktop use, it can be portably powered by any standard cell phone power pack. Readings take 1 minute to update. Power requirement per the manual is 5 volts / 300 mA. There is no associated software. The instructions are complete and clear. Since it has no internal battery; all readings, history, and the time setting are lost if power is unplugged. The temperature and humidity readings correspond well with interior readings on my weather station. Two openings on the back allow it to be mounted on a vertical surface such as a wall. Has an easy-to-read display.The device is under my PC monitor about 18 inches (45 cm) in front of me. I notice that my own personal CO2 production depends on what I’m doing. Involved concentration seems to noticeably raise it. My CO2 reading ranges from about 500 to 900 ppm. It shows baseline 410 ppm first thing in the morning. In this light, it may be that a group of relaxed meditating people in a closed room will build up a lot less CO2 than the same size group wildly gaming. This could influence ventilation equipment choices. Just a little scientific observation thing that may be of exploration interest with this CO2 monitor.