Xiaomi Detector Co2s of 2025
Best Choice1
SQECHAir Quality Detector,SQECH 4-in-1 Indoor Air Quality Detector Measures CO2, CO, Temperature and Humidity,CO2 Detector with Alarm,for Home,RV,Camping,Travel&Outdoor
Main highlights- 【High Performance Gas Detector】The rechargeable multifunctional air quality detector has a built-in 2000mAh battery, which can last for up to 60h after being fully charged, and the gas detector is equipped with a Type-C cable, which can fully meet your needs for its working time .This high-performance gas detector also supports common fast charging protocols such as QC2.0, PD3.0, AFC, USB C UFP (BC1.2 DCP CDP SDP), with a charging power of 10~65W.
- 【Exquisite and Portable】The gas detector adopts wall-mounted and vertical designs, and the bottom can be placed freely, so you can easily place the air quality detector in indoor places such as living rooms, bedrooms, kitchens, etc. to measure CO,CO2, temperature and humidity. Indoor air quality detector are also safety guards for travel and outdoors, designed for use in RVs, boats, planes, trucks, cars, camping tents, stove heaters and other confined spaces.
- 【Easy to Read】The Indoor air quality detector has a 3.7" high-definition color LCD display screen that is easy to read even at night. When there is no operation or alarm signal, the backlight will be turned off, but the air quality detector can still continue to detect CO and CO2.You can click the "function button" of the indoor air quality detector to turn on the backlight.
- 【Customized CO and CO2 Alarm】The multifunctional air quality detector displays 3-level indicators based on CO and CO2 concentration. Its alarm function can remind you of the presence of CO or CO2, helping you protect yourself in time. CO default alarm range: 150~500PPM, CO2 default alarm range: 1500~5000PPM.You can also double-click the "function button" of the gas detector to customize the alarm thresholds for CO and CO2 concentrations.
- 【4-in-1 Multifunctional Air Quality Detector】This indoor air quality detector provide us with safe and reliable air quality measurement, while also being able to measure air temperature and humidity, keeping us in a comfortable air environment.The 4-in-1 air quality detector can detect CO concentration range is 0~500PPM,CO2 concentration range is 400~5000PPM [±(50PPM + 5%)], and temperature range is 32~122°F (±2.7°F) / 0~50°C (±1.5°C), humidity range is 20~80%RH.
9.9Exceptional
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Value for Money2
LFFLFF CO2 Detector, 4-in-1 Wi-Fi Air Quality Monitor Gas Detector, Carbon Dioxide Detector, CO2 Monitor with Alarm, Temp, Humi and Time, Indoor Air Quality Monitor for Home, Kitchen, Room, Car
Main highlights- WI-FI CO2 DETECTOR WITH APP CONNECTION: The Wi-Fi CO2 monitor enables remote air quality monitoring via the Smart Life APP (2.4GHz Wi-Fi only). You can view current air quality readings, export historical data, and analyze trends over time.
- HIGH ACCURACY & FAST REFRESH: With the use of NDIR technology, this carbon dioxide detector provides real-time monitoring of indoor temperature, humidity, and CO2 index. The air quality monitor indoor has a CO2 detection range of 400-5000ppm with an accuracy of ±5% +50ppm. Additionally, it can detect temperatures ranging from 14.2℉ to 122℉ (-9.9℃ to 50℃) and humidity levels between 1% and 99% RH.
- EASY TO READ: The indoor air quality monitor is designed with a full-color LCD display and a large 4-inch screen, making it easy to read from any angle. It also includes 3 levels of CO2 index icons, each represented by a different color, allowing for quick identification of the current CO2 concentration and a better understanding of air quality.
- CONVENIENTLY PORTABLE: The home air quality test is equipped with a built-in 2000mAh rechargeable battery that can last up to 8 hours on standby. It comes with a complimentary Type-C power cable for charging. Additionally, it offers 3 levels of backlight adjustment, allowing you to customize the brightness according to your preference.
- 3-IN-1 AIR QUALITY MONITOR: The gas detector conveniently measures 3 important indexes for air quality, including CO2, temperature, and humidity. It allows for customization of the CO2 alarm value for CO2 concentration and includes dual alarm clocks and snooze functions, making it perfect for daily use at work or home.
9.8Exceptional
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3
U UNNI33% OffU UNNI CO2 Monitor Carbon Dioxide Detector for Home, 3 Adjustable Volume for Alerts & 3 Adjustable Backlight, Photoacoustic Sensor for Temperature Humidity & Indoor Air Quality Monitor
Why we love it
Real-time CO2 monitoring.
Adjustable alarm and backlight settings.
High-precision Swiss sensor.
9.7Exceptional
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4
INKBIRDPLUSINKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, for Home, Office, Travel (PTH-10C)
8.7 worth the money8.7 Simple to use8.7 Precision9.4Excellent
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5
LunarlipesLunarlipes Portable 4-in-1 Carbon Monoxide Detectors, Mini Carbon Monoxide and Carbon Dioxide Monitor with Magnetic Suction, RV CO CO2 Detector Alarm Temp/Humidity Sensor, CO CO2 Air Quality Monitor
9.1 Easy installation8.4 worth the money8.4 clearly written9.3Excellent
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6
LSENLTYLSENLTY Upgraded Carbon Dioxide Detector Plug in Wall Design, 3 in 1 CO2 Detector(Temp, Humidity and CO2 Value), High Accuracy CO2 Meter with Alarm Function and Manual Calibration for Home Office RV
Main highlights- Upgraded CO2 Detector Wall Plug: The upgraded carbon dioxide detector is equipped with a more accurate sensor and its sensitivity is more accurate than the previous version. This plug-in carbon dioxide detector is ready to use with no standby time required. It works with 110V to 220V AC outlets and fits all standard US outlets in bedrooms, RVs, living rooms, basements, hotel rooms, offices, and more.
- The LSENLTY plug-in 3-in-1 air quality monitor measures CO2, temperature, and humidity. It features adjustable alarm settings and manual calibration, making it a reliable and user-friendly choice for homes, greenhouses, offices, RVs.
- Manual Calibration Function: This CO2 monitor can be manually calibrated. Simply place it in a ventilated area and press the "Sun" button on the left for 5 seconds to activate the 200-second manual calibration mode. Once completed, the screen will display "Calibration √".
- High Accuracy and Fast Refresh Rate: Equipped with advanced sensors, CO2 accuracy is ±5% (range: 400-5000 PPM), temperature accuracy is ±2.7℉ (range: 14-122℉), and humidity accuracy is ±5%RH (range: 0-95%RH). Monitor real-time changes in CO2 levels, temperature, and humidity with updates every 2 seconds.
- CO2 Detector Stages: This device features three CO2 concentration levels: Normal (400-600 ppm), Warning (700-1499 ppm), and Danger (1500-5000 ppm). The LSENLTY CO2 Detector promotes a healthier lifestyle.
- CO2 Alarm Function: An alarm sounds automatically when CO2 exceeds 1500 PPM, with customizable alarm ranges available. Receive immediate alerts when CO2 levels surpass your set thresholds, ensuring awareness in bedrooms, nurseries, wine cellars, basements, and other spaces.
9.2Excellent
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7
GenericProtmex Portable Carbon Monoxide Detector for Travel, Professional Rechargeable CO CO2 Detector Meter Air Quality Monitor with Magnetic Suction, RV Carbon Dioxide Detector Alarm Temp/Humidity Sensor
Main highlights- 【Outdoor Lanyard & Magnetic Suction】The bottom of the CO CO2 air quality monitor can be placed freely, you can put it on the table in the living room, kitchen, bedroom, etc. And it is equipped with a special outdoor lanyard, which is convenient for you to carry and use in outdoor activities such as travel, camping, picnic, and adventure. There is also a magnetic function on the back of the CO CO2 monitor, which can be attached to any metal area such as home appliances or cars.
- 【Large Capacity Battery and Fast Charging】 The mini 4 in 1 CO detector features a powerful 1000mAh lithium battery with Type-C fast charging support, eliminating the need for frequent replacements and ensuring long-lasting operation. A single full charge lasts 140 hours, providing reliable safety during extended trips, making it an ideal travel companion
- 【Kindly Notice】Due the inventory problem, we have the two color (Green and Orange) co detector in stock, and will send you the co monitor by random for the color, thanks for your understanding.
- 【Intuitive& Safety Alarm】 Equipped with a vivid LCD display and a loud alarm, air safety assessment in this 3-segment system has never been so clear: green (safe), yellow (low-frequency alarm), and red (high-frequency alarm). Warning range adjustable within 25-125 (default 50) for your safety in any outdoor or indoor situation. Gift for kids, boys, girls, and adults you love.
- 【High Quality Item With Confidence】Your satisfaction is our top priority. We provide 3 years service and lifetime technical support for CO CO2 detector portable. If you encounter any problems, just contact us through Amazon Customer Service or Q&A and we will reply within 12 hours. risk-free shopping. Customer satisfaction is our tireless pursuit.
- 【High Precision 4 in 1 CO Detector】 The portable 4-in-1 carbon monoxide detector can monitor the current CO, CO2, temperature and humidity in the air in real time. Equipped with a high-precision sensor (10-year life), the detectable CO concentration range is 0~1000PPM, the CO2 concentration range is 400~5000PPM, and the temperature range is 14~122℉ / -10~50℃, humidity range is 0~95%RH. The data is accurate without delay and monitored in real time.
- 【Easy to Carry】 The CO Meter is designed to be compact and lightweight, measuring 7.6x6x3cm/2.75*2.99*1.18in, making it easy to fit into your luggage without occupying much space. The included lanyard allows for easy carrying, even when traveling light. Ensuring safety and peace of mind wherever your journey takes you.
9.1Excellent
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8
Newentor29% OffNewentor CO2 Monitor, Indoor Air Quality Meters, Carbon Dioxide Detector with Voice Alert, Large Display CO2 Tester, Temperature Humidity Sensor, Alarm Clock for Home, RV, Grow Tents, Black
9.3 clearly written8.0 User interface8.0 PrecisionWhy we love it
Accurate CO2 measurements.
Customizable alert settings.
Bright, easy-to-read display.
9.0Excellent
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9
AirKnight MonitoringAirKnight Monitoring CO2 Monitor Indoor with Bonus Humidity & Temperature Readings | Carbon Dioxide Meter, Homebrewing - Carbon Dioxide Detector, Portable CO2 Detector, CO2 Meter Indoor, CO2 Sensor
Main highlights- [WORKS FOR HOMEBREWING] – Equipped with a customizable built-in CO2 alarm, the AirKnight is a simple solution for grow rooms, 4x4 grow tents, homebrewing setups, wine cellars, mushroom farms, or classrooms.
- [PORTABLE FOR USE ANYTIME, ANYWHERE] – With a durable 2000 mAh rechargeable Lithium-Ion battery, the AirKnight CO2 monitor is designed for portability, providing up to 12+ hours of continuous carbon dioxide monitoring on a single charge. Stay safeguarded no matter where you go!
- [PLUG AND PLAY] – Our CO2 meter was designed and customized to be user-friendly for the American customer, and more importantly, to keep your home and office safe. An instructional video and an informative, clearly written user manual are included also, just in case.
- [EXTENDED WARRANTY] – AirKnight Monitoring is A US-based business with strict quality controls and a US-based customer phone support. However, sign up for our free extended warranty and, if you ever have any issues, we'll make sure you're taken care of!
- [A Knight At Your Side] – AirKnight Monitoring knows that every breath counts. That's why our 3-in-1 CO2 monitor is equipped with modern sensors that detect CO2, HUMIDITY, and TEMPERATURE in REAL-TIME, all displayed on one easy-to-read, LCD screen.
8.9Very Good
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10
VETOUCHVETOUCH Plug-in CO2 Detector, 3-in-1 Air Quality Monitor with Temperature & Humidity, Manual Calibration, CO2 Alarm Function, Ideal for Home, Office, School, and Gym, Real-time Monitoring
Main highlights- Plug-in CO2 Detector: This plug-in carbon dioxide detector is ready to use right out of the box, eliminating any concerns about standby time, making it convenient and practical for any setting. Whether in your home, office, or other locations, you can easily utilize this CO2 measuring device.
- Manual Calibration Function: This unit supports manual calibration. Simply place it in a well-ventilated area and press the "Sun" button on the left for 5 seconds to enter the 200-second manual calibration mode. After calibration, the screen will display "Calibration √," ensuring accurate readings from your CO2 monitoring device, suitable for various environments where precise monitoring is required.
- Levels of Carbon Dioxide Concentration: This carbon dioxide detector is designed with three concentration levels: Normal Stage (400-600 ppm), Warning Stage (700-1499 ppm), and Danger Stage (1500-5000 ppm), helping you quickly understand the air quality and protect the health of your home and office environments with this reliable CO2 measurement tool.
- Guidance on CO2 Detector Concentration Ranges: The accuracy of the carbon dioxide sensor is ±5% (detection range: 400-5000 PPM), temperature accuracy reaches ±2.7℉ (detection range: 14-122℉), while humidity accuracy is ±5% RH (detection range: 0-95% RH). You can monitor the latest changes in CO2 concentration, temperature, and humidity in real time, with an update rate of up to every 2 seconds. This makes it an ideal choice for air quality monitoring with a CO2 detection device.
- CO2 Alarm Feature: When CO2 levels exceed 1500 ppm, the device will automatically sound an alarm. Additionally, you can customize different alarm thresholds as needed. Whether in a kindergarten, office, or home setting, once carbon dioxide levels exceed the preset range, you will receive an immediate alert, helping you stay aware of the air quality with this carbon dioxide alert system.
- 3-in-1 Air Quality Monitor: This plug-in 3-in-1 carbon dioxide monitor features not only basic functions (monitoring CO2 levels, temperature, and humidity) but also allows you to set alarm values and perform manual calibration. It fully meets your needs and is suitable for various environments, including homes, schools, and gyms, where an air quality sensor is essential.
8.7Very Good
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