Looks like a nice unit but you are on your own to figure things out. I haven’t found a way to shut off the alarm or turn on the backlight. Again, the unit may be great once I figure out how to use it.

Gives you the level of CO 2 at a glance and has an alarm warning for high levels. If you move it room to room you can see different levels in each room. When my gas furnace is on you can see a slight rise in emissions. This is a compact , but very useful monitor.

We've had indoor air filters for a while but never really knew how to know if they are effective and improving our air quality.... Well know we do! I have severe asthma and my whole family has allergies so this is important to us. It's plug and play, I plugged it in and let it sit overnight to acclimate. I started looking at the readings throughout the last week. It's interesting how the readings are much higher when the house is all closed up and no filter on. Opening the house or filtering the air and the numbers went down considerably. Very easy to read display, nice and bright colors that are easy to read and can be turned dim as well. We also like to monitor the temp and humidity as it's useful to know when you need to dry out the house etc. It's been great knowing what our air quality is inside via our new CO2 monitor. I highly recommend.

Having a CO2 unit in the home is a 'peace of mind' device. The unit displays CO2 levels, date, time, inside temp and humidity. Keep in mind, the unit does need to be calibrated for proper readings. The unit comes with a USB port (included). They are easy to use and felt comfortable ordering this CO2 unit from this company. I will probably buy another unit so I can have one on each floor of my home. HIghly recommend!

It never occurred to me that the level of CO2 in my home was something I should be concerned about but with the Vevor CO2 Monitor it's easy to tell when there might be a problem with the quality of the inside air in my home. The monitor is simple but pleasantly designed with a display that is easy to read. I like having the temperature and humidity levels displayed and the dual alarm clock feature is a nice bonus. The operating instructions are fairly easy to understand and it only takes a few minutes to set up the unit. So far my experience with the Vevor products I have and the Vevor Customer Service has been very satisfactory.

I’m still waiting on the delivery. It’s been a month.