Much smaller than I thought. Easy to operate and reliable, stores data for a 14-day period, which can be displayed later in the smartphone via Bluetooth. Helped a lot to improve the air conditioning in my bedroom.
SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Ba
4.7 | 1,335 ratings
Price: 142
Last update: 08-14-2024
About this item
BREATHE EASILY: Aranet4 CO2 meter measures CO2 levels, temperature, relative humidity, and atmospheric pressure in real-time, empowering you to make informed decisions for healthy ventilation. No wonder it's the top-rated indoor air quality monitor in Amazon's CO2 monitor segment!
CABLE-FREE: The power-efficient e-ink display guarantees an extended battery life of up to 4 years for this wireless air quality monitor, ensuring worry-free monitoring without the hassle of cables and cords.
EASY-TO-USE: The color coding, prominent CO2 number on the display, and optional buzzer of this air quality meter alert you when the CO2 concentration becomes too high.
FREE & INTERACTIVE APP: A smartphone application for viewing and analyzing up to 90 days of historical data from your indoor air quality meter, complete with user-friendly graphs.
PREMIUM QUALITY: Aranet4 carbon dioxide detectors use nondispersive infrared sensor (NDIR) technology for the most precise and reliable CO2 measurements. Made in the European Union.
ENJOY THE HEALTH BENEFITS: Air quality monitor indoor use helps people take better care of the atmosphere around them, leading to improved focus, mood, and overall well-being.
CABLE-FREE: The power-efficient e-ink display guarantees an extended battery life of up to 4 years for this wireless air quality monitor, ensuring worry-free monitoring without the hassle of cables and cords.
EASY-TO-USE: The color coding, prominent CO2 number on the display, and optional buzzer of this air quality meter alert you when the CO2 concentration becomes too high.
FREE & INTERACTIVE APP: A smartphone application for viewing and analyzing up to 90 days of historical data from your indoor air quality meter, complete with user-friendly graphs.
PREMIUM QUALITY: Aranet4 carbon dioxide detectors use nondispersive infrared sensor (NDIR) technology for the most precise and reliable CO2 measurements. Made in the European Union.
ENJOY THE HEALTH BENEFITS: Air quality monitor indoor use helps people take better care of the atmosphere around them, leading to improved focus, mood, and overall well-being.
Product Description
Take care of your air!
Carbon Dioxide
This odorless gas is harmless in small quantities. However, increased concentrations negatively impact productivity, health, and indoor air quality.
Temperature
Humans operate best under specific conditions. Studies show that maintaining a range of 68-76 °F (21-22 °C) is ideal within homes, offices, etc.
Relative Humidity
Finding the correct balance of moisture (30-60%) in an indoor environment is key to ensuring human comfort.
Atmospheric Pressure
Atmospheric pressure affects human well-being, impacting breathing, blood pressure, and ear pressure, especially during altitude changes.
Free app
- It allows you to see the measurement history going back 90 days or see CO2 measurement in real-time.
- Allows you to see the readings you had during the night or while you were away from home.
- Makes it easy to track progress, when implementing changes in your home ventilation, so you can find the best solutions for your home and make smarter decisions.
- Makes it easy to change various settings for your Aranet device.
- You can turn on the buzzer and change the warning thresholds to custom settings.
Wireless and portable – take your Aranet4 wherever you go!
Aranet4 HOME is easy and fun to use. You can move it between rooms in your house, take it to hotels during business trips, or monitor the air quality in classrooms, conference rooms, museums, parties, concerts, and so many other places. Bring Aranet4 HOME with you wherever you go!
Top reviews from the United States
Helder
Highly recommend it
Reviewed in the United States on August 5, 2024Wes
Shocking Revelations Make it a Must Buy
Reviewed in the United States on July 17, 2024Stu
Great device, compact with nice app
Reviewed in the United States on July 5, 2024
Stu
Reviewed in the United States on July 5, 2024
The refresh rate is maddeningly slow, but I guess that’s the price we pay for long battery life.
It’s a winner. Wish it measured CO too.
Images in this review
Neil Fusillo
Nice little device with a lot of battery life.
Reviewed in the United States on June 29, 2024JZ
Home Assistant integration works great!
Reviewed in the United States on May 28, 2024Alan J Conley
Keeps dropping Bluetooth
Reviewed in the United States on July 29, 2024
Lucas Nicodemus
After manual calibration, this is a very awesome battery-powered CO2 sensor
Reviewed in the United States on April 14, 2022
Lucas Nicodemus
Reviewed in the United States on April 14, 2022
Measured against known good sensors (particularly my TIM10), my Aranet4 sensor read about 75ppm higher than the environmental level out-of-the-box. The app warns you that performing calibration will permanently erase the factory calibration data, which is somewhat scary, but I did it anyway. In order to validate that the calibration was successful, I had my trusted TIM10 sensor outdoors, connected to AC power, out of the sun, with the Aranet4 directly next to it, on a substantially windy day with extremely good air quality (as measured by PM2.5 and PM10 presence from AirNow and Purple Air). The floor, outdoors, in this configuration, as read by the TIM10 unit, was 380ppm of CO2. Before calibration, in the same environment, Aranet4 reported 480ppm. After calibration, Aranet4 reported within 15ppm of TIM10, which I considered a success, particularly given the rarity of having such a low reading. All of the Awair units bottom out at 400ppm.
Following calibration, for the last few weeks, I've kept an eye on Aranet4 and TIM10 when they've been in the same room. There's approximately a 10-15ppm disagreement between TIM10 and Aranet4, which I consider a very acceptable deviation given that Aranet4 is battery powered, and TIM10 is AC powered.
On the app side, Aranet4 provides a serviceable iOS app. The iOS app itself is perfunctory. It provides graphing, exporting data (as csv, including CO2, pressure, humidity, temperature, and date of sample), and basic reporting features. It doesn't support dark mode, though, as an example of its perfunctory nature. The app developers didn't consider the performance impacts that storing all of the data would have on the graphing component, though, so the app gets laggier the more data the sensor measures. You're also only going to get a week of data for historical measurement.
Other details are worth mentioning beyond the sensor accuracy and app integration, though. E-ink, as a display type, is just awesome. It looks very nice, aesthetically. Each refresh blanks the screen temporarily, though. Keep this in mind, if you decrease the measurement interval (you can measure as frequently as once per minute). Also, there's no backlight, which is why the battery life is good, but keep this in mind too, if you want to see it in the dark.
I've taken this sensor on an airplane, and it works great there too. It's just an incredible sensor to have -- you can pocket it or bring it somewhere in a backpack and still have CO2 measurements, where most sensors can't go. For travel, or just in general, it's a great device to have. After calibration, it measures very accurately, and I'm happy with my purchase all around. However, I'd say calibration is mandatory.
I've included a screenshot of a graph made from the CSV, as well as the CSV data from the unit itself.
Images in this review
bosyun
Price
Reviewed in the United States on July 11, 2024