Plug in CO2 Detector Wall, 3-in-1 Air Quality Monitor CO2 Alarm, Digital Display CO2 Monitor, Household Temp Humidity Meter, Real-Time CO2 Level Sensor Alert for Home Office School Garage

Price: $39.99
(as of Sep 18, 2026 22:18:55 UTC – Details)

Product description

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Customer Reviews

4.4 out of 5 stars 115

4.8 out of 5 stars 6

3.4 out of 5 stars 45

3.4 out of 5 stars 89

4.0 out of 5 stars 83

4.2 out of 5 stars 25

3.8 out of 5 stars 10

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$39.99$39.99

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$29.99$29.99

$19.99$19.99

Requires batteries

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Plug‑in CO₂ Monitor This plug‑in CO₂ monitor tracks carbon dioxide, temperature, and humidity. A reliable co₂ monitor for home with a large color display for daily indoor air monitoring. Real‑Time CO₂ Meter The co₂ meter shows live CO₂, temperature, and humidity. This digital CO₂ detector updates every 2 seconds – a complete indoor air quality solution. CO₂ Alarm Alert Set your own alert level with this co₂ alarm. When CO₂ exceeds your setting, an 85dB buzzer sounds – a dependable carbon dioxide detector for peace of mind. Portable CO₂ Detector Lightweight and compact, this portable CO₂ detector is perfect for travel. Monitor air quality anywhere with this convenient device. 5‑Year CO₂ Sensor Built with a 5‑year sensor, this CO₂ monitor delivers long‑term reliability. A durable carbon dioxide monitor for consistent indoor air quality tracking. Self‑Calibration CO₂ Meter Manual 200‑second calibration ensures long‑term precision. This CO₂ sensor maintains accuracy – a dependable air quality tool for any space. Color‑Coded Air Quality Green, yellow, and red bars provide instant visual feedback. This air quality detector makes it easy to understand indoor CO₂ levels at a glance. 180° Flip CO₂ Detector Long press to rotate the display 180° – this CO₂ detector offers easy viewing from any angle. A practical air quality monitor for flexible placement. 3‑in‑1 CO₂ Monitor Tracks CO₂, temperature, and humidity in one device. A complete temperature and humidity monitor and CO₂ monitor for home use. Plug‑and‑Play CO₂ Simply plug into any outlet – no setup required. This plug‑in CO₂ detector is a convenient air monitor for instant indoor air quality readings. Smart CO₂ Alarm The CO₂ alarm sounds when levels exceed your setting – mute with one press. A smart air quality monitor for home or office use. Fast‑Refresh CO₂ Meter Data updates every 2 seconds – this CO₂ meter provides accurate, real‑time air quality readings. A responsive carbon dioxide detector for daily monitoring. Compact CO₂ Detector Weighs only 60g – fits easily into bags. This portable CO₂ detector is a must‑have travel companion for health‑conscious individuals. CO₂ Digital Display The large digital display shows CO₂, temperature, and humidity clearly. This carbon dioxide monitor is easy to read from any angle. Indoor Air Monitor Tracks CO₂, temperature, and humidity simultaneously. This air quality monitor is a complete indoor air quality meter for any environment.Tracks CO₂, temperature, and humidity simultaneously. This air quality monitor is a complete indoor air quality meter for any environment. Low‑Maintenance CO₂ 5‑year sensor life and self‑calibration – this CO₂ monitor is built for long‑term, low‑maintenance air quality monitoring. A reliable sensor for home or office.

🍃【Plug & Play】 Simply plug into any outlet — no batteries needed. This CO2 detector powers on instantly and starts monitoring indoor air quality right away. 【⚠️Important Note: This device detects Carbon Dioxide (CO2), NOT Carbon Monoxide (CO). It is an air quality monitor and is NOT a substitute for a smoke or carbon monoxide alarm.】
🍃【3-in-1 Air Quality Monitor】 Tracks carbon dioxide, temperature, and humidity simultaneously. One device gives you a complete picture of your indoor air environment.
🍃【Large Color Display】 Features a 1.83″ color screen with bright, clear readings. Easily see CO2 levels, temp, and humidity from 15 feet away — no squinting required.
🍃【Adjustable Screen Brightness】 Three brightness levels to choose from (off, low, high). Dim the screen for nighttime or crank it up for daytime visibility. Your call.
🍃【Flip Display for Any Outlet】 Long-press the right button for 5 seconds to flip the screen 180°. Perfect for upside-down outlets or when you need to read from a different angle.
🍃【High-Precision CO2 Sensor】 Accurate to ±5% (400–4999 ppm) with 2-second rapid refresh rate. Get real-time, trustworthy air quality data, not stale guesses.
🍃【5-Year Sensor Lifespan】 Built with a durable NDIR sensor rated for 5 years of reliable use. Set it up and forget it — long-term peace of mind included.
🍃【85dB Audible + Visual Alarm】 When CO2 exceeds your set limit, the alarm triggers with a flashing red light and an 85dB buzzer. Loud enough to hear across the room.
🍃【Customizable Alarm Threshold】 Adjust the CO2 alarm trigger level with a 4-digit setting. Tailor the device to your specific air quality standards or preferences.
🍃【Travel-Ready Compact Design】 Weighs only 60g with universal voltage support (110–240V). Perfect for home, office, RV, or travel. Fits easily in any carry-on.
Customers find the CO2 detector’s sensor quality positive. However, the accuracy receives mixed feedback, with several customers reporting lack of accuracy. Moreover, the CO2 measurement aspect receives negative feedback, with one customer noting it’s not a carbon monoxide detector.