Best Temtop in 2026

The economical 5-in-1 air quality detector use highly accurate and professional sensors to measure PM2.5, PM10, particle, HCHO and AQI.

By using our latest 3rd generation Temtop laser particle sensor and optimised PSO algorithm, it makes particle measurements become more accurate and stable and enhanced its sensor life up to 20,000 hours.

The pre-factory calibrated electrochemical sensor enhanced its accuracy and capturing formaldehyde molecules more precisely.

UPGRADED SENSOR: Adopting Temtop second-generation PM2.5 particle laser sensor, directly transform the PM2.5 & PM10 concentration into visual data and colorful health level indicators, providing an effective safeguard for you and your family.

PROFESSIONAL SENSOR: Advanced industrial-grade sensor offers more than 20,000 hours lifespan. Combined with the unique particle swarm optimization algorithm, it makes particle measurement more accurate and stable.

DATA GRAPH: Large storage capacity to store and display the data of the past 12 hours, check the air status via the histogram and track the trend of air quality for the specific time period.

💡💡 【Breakthrough】-- You can have a temperature & humidity detector with air quality monitor for the price of a thermometer.

💡💡【Originality】 -- Sensor integration technology innovatively integrates PM2.5 and temperature and humidity sensors, 30% thiner than other hygrometers.

💡💡【Beyond】-- it can monitor PM2.5, a category 1 carcinogen declared by the WHO in real time, making temperature and humidity detection simpler and easier.

The perfect companion for indoor environments, allowing you to monitor CO2 levels, temperature, relative humidity, and atmospheric pressure in real-time

Easy for anyone to use – the color coding and the optional buzzer warns you when the CO2 concentration gets too high

Power-efficient e-ink display ensures super long battery life for this wireless device (up to 4 years)

Fully customizable ppm deadband and CO2 set point allow flexibility in programming

Trend chart records CO2 levels per minute, hour, day and week for accurate analysis of CO2 distribution

Adjustable trend chart zoom levels let you trace your ppm levels

⚛️ ACCURATE: Carbon Monoxide (CO) gas detector, 0-1000ppm with 1ppm resolution. USA NIST Calibration. Turn ON and GO.

🌇 DETECT: Electrochemical cell sensor with error better than ≤±5% F.S. and response time: T<30s. Zero and span calibration options. Comes factory calibrated.

🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarm digital time stamp and logging.

🏕️ [High-precision CO2 Sensor]: The CO2 detection adopts the most advanced sensor of Swiss Sensirion's unique PASens technology, and adopts the photoacoustic detection principle to perform accurate and reliable measurements in a wide range of concentration areas and applications.

🔔 [Carbon Dioxide Concentration Alerts]: The CO2 concentration alert value can be customized to make our life, work or production environment safer.

💧 [Temperature and Humidity Monitor]: Temperature and humidity are closely related to human body, plants or storage environment. This air quality tester has the function of real-time monitoring of temperature and humidity.

Indoor CO2 Monitor: Compact size Body with hollow back design for carring and airflow. Big colorful LCD digital screen for people easy to identify and read. Not only monitoring the CO2 content, also can test the temperature & humidity. Air quality monitor is Keeper of family health, Perfect for home interior, such as living room, baby room, classroom, office and which closed places etc.

Necessity of Air Quality Monitor: Carbon dioxide (CO2) is not harmful to human body when it is low, but when it overs a certain amount, it will affect the breathing of humans (and other organisms). If serious, life is threatening. Thus, we have to monitor the CO2 content of air for keeping health.

Advanced NDIR Technology: Mini CO2 meter uses high precision NDIR sensor technology to detect carbon dioxide content accurately and quickly. and it can hazard assessment, when CO2 of air exceed the setting alarm value(alarm value: 1000 PPM), it will warn to remind people to open the window or turn on air purifier for keeping balance of air.

Measuring Range CO2: 0~9999ppm

Temperature Range: -10.0~60.0°C (14~140°F) /Resolution: 0.1°C/°F / Accuracy: ±0.6°C / ±0.9°F

CE Marking, passed the standards and had been approved by European Directives for health & safety

MULTIFUNCTIONAL & SCIENTIFIC – As our newest model, this indoor air quality monitor accurately assesses temperature in Celsius, humidity level, and multiple measures of air quality including concentrations of formaldehyde, total natural & synthetic volatile organic compounds causing most odors (TVOC), and fine particulate dust matter (PM2.5/PM1.0/PM10) which travel deeply into the respiratory tract, reaching the lung alveoli.

PORTABLE TESTING – Spot check indoor air quality anywhere or leave device on for continuous monitoring. This easy-to-carry air quality tester can help monitor air quality at home, in the car, and in hotel rooms. The lithium battery provides portable power when DC 5V micro USB charging is not available. Information is displayed on a clear 2.8” 320 x 240 pixel color LCD display.

ADVANCED FAN & SENSORS – This air quality monitor has a built-in fan to quickly draw in ambient air to allow REAL-TIME measurements. It incorporates a laser sensor to measure levels of dust particles and has a second electrochemical semiconductor sensor to test air quality including formaldehyde and natural/synthetic organic compound levels.

MULTIFUNCTIONAL & SCIENTIFIC – This indoor air quality monitor accurately assesses temperature (in C/F), humidity level, and multiple measures of air quality including concentrations of formaldehyde, total natural & synthetic volatile organic compounds causing most odors (TVOC), and fine particulate dust matter (PM2.5/PM1.0/PM10) which travel deeply into the respiratory tract, reaching the lung alveoli.

PORTABLE TESTING – Spot check or leave device on for continuous monitoring of indoor air quality. Built-in stand allows air monitor to be placed unattended anywhere. This easy-to-carry device can help monitor air quality at home, in the car, and in hotel rooms. The lithium battery provides portable power when DC 5V micro USB charging is not available. Information is displayed on a clear 2.8” 320 x 240 pixel color LCD display.

ADVANCED FAN & SENSORS – This air quality monitor has a built-in fan to quickly draw in ambient air to allow REAL-TIME measurements. It incorporates a laser sensor to measure levels of dust particles and has a second electrochemical semiconductor sensor to measure formaldehyde and natural/synthetic organic compound levels. Air monitor also auto calibrates in fresh air.

MULTIFUNCTIONAL & SCIENTIFIC – This indoor air quality monitor accurately assesses multiple measures of air quality including concentrations of formaldehyde (HCHO), total natural & synthetic volatile organic compounds causing most odors (TVOC), and fine particulate dust matter measuring <2.5 microns in size (PM2.5) which travel deeply into the respiratory tract, reaching the lung alveoli and can worsen asthma.

PORTABLE TESTING – Spot check indoor air quality anywhere or leave device on for continuous monitoring up to 2 days. This easy-to-carry air quality tester can help monitor air quality at home, in the car, and in hotel rooms. The 2200mAh battery provides portable power when DC 5V micro USB charging is not available. Information is displayed on a clear 2.8” color LCD display.

ADVANCED FAN & SENSORS – This air quality monitor has a built-in fan to quickly draw in ambient air to allow REAL-TIME measurements. It incorporates a laser sensor to measure levels of dust particles and has a second electrochemical semiconductor sensor to measure formaldehyde and natural/synthetic organic compound levels.

【Award-winning Multifunction Air Quality Detector】Qingping Air Monitor shows a full picture of Indoor Air Quality (IAQ) by monitoring PM2.5, CO2, TVOC, temperature, and humidity. It provides real-time data of weather forecast, AQI, and UV index (forecast of AQI and UV is not available in the US). You can also check the date, calendar and time on the screen (need to connect it to the network to access the right time zone). The product with elegant design has won an iF and a Red Dot design awards.

【Accurate and Reliable Measurement】The product is fast-responding and sensitive with a 1.2GHz 4-core A7 chipset. The product has top-level sensors built-in, along with the multi-mode compensation algorithm, the measured data is accurate and reliable. The innovative design of the vents enables sufficient contact between the air and the sensors to improve efficiency. The evaluation and colorful bar under readings help you to interpret the indoor air quality.

【High-resolution Touch Screen】The 3.1'' IPS touch screen with 328 PPI is ultra-clear. The brightness can be adjusted automatically. Each metric is with a color indicator under the number, so you can understand the indoor air quality and the temperature/humidity level of your room at a glance. You can touch the numbers or slide to switch the interfaces, all the operations are smooth and easy.

Acrylic clear case shell, high transmittance to be looked through

2.8" TFT screen, colorization display, wide angle vision up to 180°

High sensitivity sensor ensures the high accuracy in data collections

Multiple Detectable Gases - BIAOLING upgraded indoor air quality monitor built in DART electrochemical sensors that can accurate detect air of Carbon Monoxide(CO),Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC), Particle Matter(PM2.5/PM10). This new mode can offer real time data and mean value, it is recommend you to focus on mean value of each gas after testing enough time because long-term monitoring, the real-time data exist instability.

Know Your Air Clearly - For everyone,It's necessary to know the air quality of the place where you live.This air monitor have LCD Digital Color Screen, large and easy to read. This air monitor will offer color indication to show overall environment quality which have Good(Green), Mild Pollution(Yellow),Severe Pollution(Red) three grade. You can directly to know the overall environment quality and track on each gas mean value to know what gas in air is unsafe and take accordingly actions.

Easy Operate - This air monitor is easy to operate which just pressing the functional button and one full page design make everyone can easy to read all the real time readings at the same time. Size about 5.83” * 2.76” * 1.18”. It's easy to carry the intelligent air quality monitor that can help us detect the air quality in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party etc...especially in which has baby,child and pregnant woman.

The economical 5-in-1 air quality detector use highly accurate and professional sensors to measure PM2.5, PM10, particle, HCHO and AQI.

By using our latest 3rd generation Temtop laser particle sensor and optimised PSO algorithm, it makes particle measurements become more accurate and stable and enhanced its sensor life up to 20,000 hours.

The pre-factory calibrated electrochemical sensor enhanced its accuracy and capturing formaldehyde molecules more precisely.

Multiple Detectable Gases - BIAOLING upgraded indoor air quality monitor built in DART electrochemical sensors that can accurate detect air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC), Particle Matter(PM2.5/PM10). This new mode can offer real time data and mean value, it is recommend you to focus on mean value of each gas after testing enough time because long-term monitoring, the real-time data exist instability.

Know Your Air Clearly - For everyone,It's necessary to know the air quality of the place where you live.This air monitor have LCD Digital Color Screen, large and easy to read. This air monitor will offer color indication to show overall environment quality which have Good(Green), Mild Pollution(Yellow),Severe Pollution(Red) three grade. You can directly to know the overall environment quality and track on each gas mean value to know what gas in air is unsafe and take accordingly actions.

Easy Operate - This air monitor is easy to operate which just pressing the functional button and one full page design make everyone can easy to read all the real time readings at the same time. Size about 5.83” * 2.76” * 1.18”. It's easy to carry the intelligent air quality monitor that can help us detect the air quality in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party etc...especially in which has baby,child and pregnant woman.

Know Your Air: this air quality monitor provids accurate PM2.5 information(with high quality Series Particle Sensor) in your home/office and allows you to take timely measures to keep the air quality within safe levels

3-in-1 Multifunctional Tester: displays PM2.5/AQI current and max value for 1h/24h/since last reset; also measuring the indoor temperature(°C/°F switchable) and relative humidity； Note: No outdoor temperature and humidity; will not detect mold

6 Grades Air Quality Levels Indicator: Good, Moderate, Poor, Unhealthy, Severe and Hazardous, showing you instantly what your air quality is like

UPGRADED SENSOR: Adopting Temtop second-generation PM2.5 particle laser sensor, directly transform the PM2.5 & PM10 concentration into visual data and colorful health level indicators, providing an effective safeguard for you and your family.

PROFESSIONAL SENSOR: Advanced industrial-grade sensor offers more than 20,000 hours lifespan. Combined with the unique particle swarm optimization algorithm, it makes particle measurement more accurate and stable.

DATA GRAPH: Large storage capacity to store and display the data of the past 12 hours, check the air status via the histogram and track the trend of air quality for the specific time period.

Latest Generation of Formaldehyde Air Rapid Test Kit for home, office, automobile etc. indoor air quality test.

Rapid and semi-quantitative testing of air formaldehyde without the need for any equipment.

Great for on-site testing of formaldehyde inside a car, a room or furniture.

Accurate Detection: This square air quality monitor can accurately detect and display the levels of key pollutants in your indoor environment, including PM2.5, TVOCs, formaldehyde, and more.

Real-Time Monitoring: With real-time monitoring, this air quality monitor provides you with up-to-date information on the air quality in your home or office, helping you make informed decisions about ventilation and air purification.

Portable Design: The compact and lightweight design of this air quality monitor makes it easy to move from room to room or even take with you on the go, ensuring that you always have access to accurate air quality readings.

【Multifunctional Indoor Air Quality Monitor】 This indoor air quality monitor accurately assesses intemperature & humidity level, and multiple measures of air quality. Including concentrations of formaldehyde (HCHO), natural & synthetic volatile organic compounds (TVOC), fine particulate dust matter (PM2.5/PM1.0/PM10)

【Portable Testing】 Just pressing the power on/off button, keep the device turned on and it will take the measurement automatically. The lithium battery provides portable power, standby time can last for 6-8h (supplied with USB cablea and charger). Small and lightweight, weight is only 170.5g, help monitor air quality at home, in the car, and in hotel rooms. Design with LCD color screen digital display, you can see all the information clearly.

【Innovative Technology】 This indoor air quality monitor has a built-in fan to quickly draw in ambient air to allow real-time measurements. It incorporates a laser sensor to measure levels of dust particles and has a electrochemical semiconductor sensor to test formaldehyde and natural & synthetic organic compound levels.

Portable Formaldehyde HCHO , TVOC Gas Concentration Detector with 3 Colors Light (Green/Yellow/Red) Alarm for Indoor home safety

Formaldehyde HCHO / TVOC Range : 0 ~ 9.999 mg/m3 ; Resolution : 0.001 mg/m3 ; Sensor Type : Semiconductor

Built in 360 degree detector ports on top of the meter , LCD Display HCHO / TVOC Data with Blue Color Back lighting

【Multifunctional Air Quality Monitor】This 5 in 1 CO2 monitor can detect real-time accurate detect air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compounds(TVOC), CO, AQI. CO detection range: 0-2400PPM. CO2 detection range: 0-5000PPM. HCHO detection range: 0-1.999mg/m³. TVOC detection range: 0-12mg/m³.

【Full-Color LED Screen Display】With 5.5 inch LED screen digital display design, this air quality monitor is super easy to read and shows clearly real time data. The battery displays three color states: green, orange, and red. Green indicates sufficient power. Orange indicates half of the battery. Red indicates insufficient power(Need charge it in time).

【Large Capacity Rechargeable Battery】The air quality detector has a built-in large capacity rechargeable battery, standby up to 5hours. You can check the air quality from anywhere, or have the device continuously monitor at a specific location. It will always take care of you and your family health.

Test Air Quality: Designed to help keep your family safe, our DIY kit determines if Formaldehyde Gas (HCHO) is in your home. Suitable for areas up to 270 square ft, use only one kit per room. To inspect the whole house, use one kit per room.

Fast, Reliable Results: To test, just follow the 6 steps outlined in the included manual. Keep air temperature and humidity unchanged while testing. You'll have visual results in 30-50 minutes. This test should only be used for your home or office.

For Better Readings: Turn off ventilation, air purifiers and anything that may affect the air for at least 8 hours prior to testing. Store unused kits in a dry, dark place. The expiration is 2 years from the production date printed on the package.

Test Air Quality: Designed to help keep your family safe, our DIY kit determines if Formaldehyde Gas (HCHO) is in your home. Suitable for areas up to 270 square ft, use only one kit per room. To inspect the whole house, use one kit per room.

Fast, Reliable Results: To test, just follow the 6 steps outlined in the included manual. Keep air temperature and humidity unchanged while testing. You'll have visual results in 30-50 minutes. This test should only be used for your home or office.

For Better Readings: Turn off ventilation, air purifiers and anything that may affect the air for at least 8 hours prior to testing. Store unused kits in a dry, dark place. The expiration is 2 years from the production date printed on the package.

SEE THE AIR YOU BREATHE -Only uHoo’s air quality monitor provides a fully comprehensive analysis of the air quality in your space by measuring temperature, humidity, dust, toxins, NO2, CO2 and more.

uHoo VIRUS INDEX -Be equipped with the power of knowing exactly what to do to fight viruses indoors, so you can rest easy knowing your air is optimized for health and safety.

SIMPLE AND EASY -Get alerts, tips, and insights on how to manage your indoor air quality. All the information you need can be found in a beautiful interface that anyone in the family can understand.

Multifunctional Air Quality Detector: The Govee Air Quality Monitor conveniently measures 3 important indexes for indoor air quality, including PM2.5, temperature, and humidity.

High Accuracy & Fast Refresh Time: With this smart sensor, the PM2.5 accuracy is ±15 µg/m³ while temperature and humidity accuracies are ±0.54°F and ±3%RH. A 2s refresh speed gives you the latest changes in PM2.5, temperature, and humidity.

Different Displays: Press the top button for the clock & PM2.5 display. Long press for 2 seconds to switch to bright screen mode & night mode. The LED indicator displays 4 levels of ambient air quality. 2.4G Wi-Fi is required to display the time.

💡💡 【Breakthrough】-- You can have a temperature & humidity detector with air quality monitor for the price of a thermometer.

💡💡【Originality】 -- Sensor integration technology innovatively integrates PM2.5 and temperature and humidity sensors, 30% thiner than other hygrometers.

💡💡【Beyond】-- it can monitor PM2.5, a category 1 carcinogen declared by the WHO in real time, making temperature and humidity detection simpler and easier.

【Multi-functional air quality monitor】: With the combination of electrochemistry, semiconductor and temperature and humidity sensors, this multi-function air quality detector can not only accurately detect CO2, HCHO, TVOC, PM2.5/PM1.0/PM10 in the air in real time, but also comprehensively detect the temperature and humidity in the air.

【New LED screen display】: Equipped with a 1.9 inch ultra-high definition LED display, the data monitored by the portable air quality monitor is clearly visible. At the same time, it is equipped with high-precision sensors to make the detection data more accurate and stable.

【High performance battery】: The air quality tester has a 1200mAh rechargeable lithium battery, which can be used continuously for more than 10 hours after being fully charged. At the same time, it supports USB charging, environmental protection and energy saving, and supports low battery prompt, which is very practical.