CO2 Monitor Carbon Dioxide Detector for Home, 3 Adjustable Volume for Alerts & 3 Adjustable Backlight, Photoacoustic Sensor for Temperature Humidity & Indoor Air Quality Monitor

⭐⭐⭐⭐⭐ Breathe Easy, Live Smart! 🏡💨📉Verified Purchase – CO2 Monitor Carbon Dioxide Detector for Home, 3 Adjustable Volume Alerts & Backlight | Photoacoustic Sensor | Temperature, Humidity & Air Quality MonitorIn today’s world of invisible threats and overabundant data, having a CO₂ monitor in your home is no longer just for scientists or lab geeks—it's for anyone who values their health, productivity, and peace of mind.This unit delivers real-time air quality intelligence with an incredibly precise photoacoustic sensor. That’s right—no old-school electrochemical guessing here. You’re getting cutting-edge readings on carbon dioxide levels that actually help you make decisions, from when to ventilate a room to how your HVAC is performing.The adjustable alert volumes? Genius. The ambient backlight? Perfect for both daytime and night-time reads. And don’t even get me started on the humidity and temperature monitoring—it’s like a Fitbit for your indoor climate.💡 Fun fact from the amateur economist corner: Did you know high CO₂ levels can impact cognitive function and reduce productivity? In an age where we’re increasingly working from home and pushing for smarter, more efficient living—this is one of the best small investments you can make.Pros:Lab-grade CO₂ monitoring (photoacoustic tech = 🔬✅)Tracks humidity, temp & overall air qualityCustomizable alerts & sleek backlight for 24/7 visibilityPortable, intuitive, and plug-n-play easeBottom line? This isn't just a device—it's a household upgrade. A quiet defender of your well-being and a subtle ally in maximizing your day-to-day output. You wouldn't drive a car without a dashboard—why live in a house without knowing your air?#AirQualityMatters #CO2Awareness #SmartHome #HealthyLiving #HomeTech

We had never paid much attention to CO2 levels, but now that we make our home in a house with ductless heating\AC, ventilation is really important, and other than temperature, there wasn't a simple way to see the quality of air we are breathing.This unit is a simple low-cost solution!It is from U UNNI, who is a quality brand that we really like after using some of their other products, and we had great experience with their quick\very helpful Customer Service. ✅Not only does it also give you temperature and humidity, but shows your CO2 level history in 4-hour increments over the last 24-hours, so that we can now make sure we get the right ventilation to ensure the highest quality sleep and cognitive function, which CO2 has been scientificly shown to potentially have a serious impact on. Who knew?It is the simplest of installs (just plug in power cord and turn on), has optional battery back-up if you add a few batteries, as well as offers multiple levels of colorful display brightness via a quick touch at top of the screen.If you want to know the quality of the air you are breathing in a workspace, around your kids, or in a bedroom, buy this unit. 👍

The Unni carbon dioxide monitor is small and light and seems very accurate. The display is clear and easy to read and can be dimmed or turned off. It comes with a USB cord that plugs in to any charger. Batteries can be used for memory or temporary testing, but are not necessary for the unit to function.To test the accuracy, I placed it outdoors and it was reading 401 ppm, which is normal carbon dioxide level in outdoor air. Indoor it was reading 568 ppm and it was going up when there were more people in the room and with some candles lit. The level went down to 489 ppm in the same room overnight when there were no people or lit candles.The monitor also has a thermometer and humidity function. I tested it side-by-side with a UNNI thermometer and it displayed the same temperature and humidity digits as the other unit, with only a fraction difference. The temperature can be set to Fahrenheit or Celsius.The monitor has an alarm feature that can be set if the CO2 level becomes too high. I tested by blowing on it and it went up to over 1000 ppm and a window symbol was lit on the display, indicating it is time to ventilate the room.This carbon dioxide monitor appears to work great and can be used in places where people gather, such as in schools, churches or similar, but also in your home.

Very handy device. It reads the Humidity, temperature and carbon dioxide levels in an environment. It is based on three AAA batteries yet those are a backup—just how I choose to power on. Also type c charger compatible. Absolutely plug and play, attractive and compact. In awe.

I do like that this gives accurate CO2 measurements and also indoor temperature and humidity readings. My one complaint would be that it has to be plugged in by a USB. I myself would prefer it to be a plug in.