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

I’ve been really impressed with this CO₂ Monitor Carbon Dioxide Detector. The readings are accurate and refresh quickly, which gives me a lot of peace of mind—especially with a new baby at home. The built-in temperature and humidity monitor is a huge bonus. It helps me keep the nursery at a comfortable and healthy level throughout the day, and the indoor air quality indicator makes it easy to catch issues before they become a problem. I also appreciate the 3 adjustable alert volumes and the 3-level backlight. They make the device flexible for both daytime use and quiet nighttime monitoring without disturbing the baby. Overall, this monitor is easy to use, reliable, and packed with practical features. Highly recommend it for anyone who wants to maintain a safe and healthy environment at home, especially for newborns.

⭐⭐⭐⭐⭐ Breathe Easy, Live Smart! 🏡💨📉 Verified Purchase – CO2 Monitor Carbon Dioxide Detector for Home, 3 Adjustable Volume Alerts & Backlight | Photoacoustic Sensor | Temperature, Humidity & Air Quality Monitor In 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 quality Customizable alerts & sleek backlight for 24/7 visibility Portable, intuitive, and plug-n-play ease Bottom 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

The Unni carbon dioxide monitor UN0601 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. EDIT: This is a review of Unni Air Quality Monitor UN0602. There is a USB power cable and adapter included in the box along with instructions. When you first plug it in, there is a few minutes of count down before the display starts to show any values. The calendar and clock is easy to set and there is an option for 12 hour or 24 hour format, and daylight savings time. The unit monitors CO2 in the air, expressed in parts per million (ppm). The outdoor air is typically around 400 ppm for normal clean air. CO2 values over 1000 is too high and ventilation is needed. I tested the device side by side with an older same brand CO2 monitor UN0601 and found that the values were close, but not in agreement until after one week of testing. There was a 60-100 ppm difference in the values, sometimes the old unit was lower and the new unit higher, and sometimes it was the other way around. I tested both of them outdoors and noted the value was close to 400 ppm for each. The CO2 reading can be calibrated if it seems off. I did not calibrate it, since the outdoor reading seemed accurate. After a week the old and the new monitor were displaying the same CO2 values. The CO2 monitor is using a photo acoustic sensor. The unit also monitors the total Volatile Organic Compounds (TVOC) and is displayed with five different color indicators, green being the lowest and purple the highest level. The monitor was mostly green during testing, but would quickly go to purple within an hour when cooking. Just boiling a pot of pasta on an electric stove, caused the monitor to show a purple indicator even if it was in an other room. I am more interested in VOCs from paint, flooring, furniture etc. in the home, so this can be a little misleading. The particulate matter (PM) measures pollutants smaller than 1 microns (PM1) or fine, measured in micrograms per cubic meter, smaller than 2.5 microns (PM2.5), and smaller than 10 microns (PM10), or coarse. These smaller particles are invisible, like soot, viruses, smoke etc. and can cause asthma and other health issues. Values below 75 are generally considered safe. All three PM values were showing the same numbers during testing, from 0-5. The values seemed to go up at the same time when the TVOC value was going up. Both TVOC concentration value and the PM values are measured with laser detection. Not sure how accurate they are. The ambient temperature and humidity is also measured and displayed. These values seem accurate, since I compared them to several other devices. The Unni air quality monitor also has alert functions that can be set for CO2 and PM levels. The alerts can be turned on/off. The backlight on the display has two brightness levels and can be turned off by touching the upper part. This monitor can be useful after home renovations or when moving into new places with unknown materials. It can also be useful if living in areas with suspected high air pollution.

We just purchased the Unni Air Quality Monitor for our home and fell in love with it right out of the box! It was very easy to set up. There is a nice instruction book that comes with it. The one thing missing in the manual is an explanation of the air quality acronym meanings. I had to look up their definitions. The display is clean, and colorful and very easy to read. Not only do you see current CO2 (carbon dioxide) levels, TVOC level (Total Volatile Organic Compounds, representing the combined concentration of many different organic chemicals that easily turn into gas at room temperature, used as a key indicator of indoor air quality level), and PM2.5 and PM10 levels (particulate matter in sizes 10 microns and smaller and 2.5 microns and smaller). You can set alarms for these values too. In addition to the numeric values, it also gives you readings of very good”, “good”, “normal”, “bad”, “very bad”. Bonus data displayed is indoor temperature and humidity as well as a calendar! Poor air quality could lead to headaches, drowsiness and fatigue. We are very pleased with this purchase - it is a great value for money well spent!

Simple and work great

Surprisingly accurate. I have an industrial monitoring system installed and bought this for outside of my grow area and to see how accurate these better priced readers are. The Non-Dispersive Infrared sensors ensure this little machine can read accurate levels. This is all you need for relatively accurate readings. It is tracking within 40 PPM of my more comprehensive sensor which really surprised me.

Ich habe das CO₂-Messgerät gekauft, um die Luftqualität in meinem Homeoffice Büro und Wohnzimmer besser im Blick zu behalten – und ich muss sagen: Ich bin wirklich positiv überrascht! Die Kombination aus CO₂-Messung, Temperatur- und Luftfeuchtigkeitsanzeige ist super praktisch. Auf diese Weise kann ich auch im Winter mein Raumklima überwachen und Schimmelbildung vorbeugen. Besonders gut gefällt mir das historische Diagramm, mit dem ich die Veränderungen im Laufe des Tages nachvollziehen kann. So sehe ich zum Beispiel genau, wann ich lüften sollte – was sich tatsächlich auf Konzentration und Wohlbefinden auswirkt. Die Messgenauigkeit ist überzeugend und lässt sich per Kalibrierung sogar noch feinjustieren. Auch das Alarm-System mit 5 Konzentrationsstufen ist hilfreich, wenn auch zum Glück bisher selten ausgelöst. Ich finde es super, dass man die Lautstärke des Alarms selbst einstellen kann – keine nervigen Schreckmomente, aber dennoch deutlich genug. Was mir ebenfalls gefällt: Das Gerät lässt sich sowohl per USB betreiben als auch mit Batterien puffern, falls der Strom mal weg ist oder man das smarte Gerät mit ins Wohnmobil nehmen möchte. Die drei Helligkeitsstufe für die Hintergrundbeleuchtung, welche nur über den USB-C Betrieb verfügbar sind, machen es angenehm im Alltag – nicht zu grell, aber gut ablesbar. Ein paar kleinere Kritikpunkte gibt’s aber auch: Die Batterien sind leider nicht im Lieferumfang enthalten, das wäre bei dem Preis wirklich wünschenswert gewesen. Außerdem funktioniert die dauerhafte Hintergrundbeleuchtung nur im USB-Betrieb – im Batteriebetrieb geht sie schnell aus. Und ja, das Design ist jetzt kein Blickfang – eher funktional und technisch. Unterm Strich aber ein sehr zuverlässiges, durchdachtes Gerät, das genau das tut, was es soll. Ich würde es jederzeit wieder kaufen und kann es jedem empfehlen, der die Luftqualität in Innenräumen ernst nimmt – sei es zu Hause, im Büro oder in der Schule.

Es ist ein gut verarbeitetes Gerät mit einer attraktiven Anzeige. Es reagiert zügig und aus meiner Sicht präzise auf Veränderungen. Ich betreibe es, wie empfohlen, mit USB-Kabel am Steckernetzteil und nutze die Batterien nur als Backup. Die Anzeige der Historie hatte ich anfangs als schöne, aber unnötige Zutat angesehen, doch nach ein paar Tagen Benutzung möchte ich diese interessante Information nicht mehr missen.

Works well! I bought it to measure Co2 in my small office and wondered if lower oxygen was making me feel sleepy, and this device confirmed it. Works perfectly.