--- product_id: 167490430 title: "SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History" price: "10962621₫" currency: VND in_stock: true reviews_count: 13 url: https://www.desertcart.vn/products/167490430-saf-aranet4-home-wireless-indoor-air-quality-monitor-for-office store_origin: VN region: Vietnam --- # 90 days historical data via app Bluetooth wireless connectivity Up to 4 years battery life SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History **Price:** 10962621₫ **Availability:** ✅ In Stock ## Summary > 🌬️ Elevate your air game — because your brain deserves the freshest space! ## Quick Answers - **What is this?** SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History - **How much does it cost?** 10962621₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/167490430-saf-aranet4-home-wireless-indoor-air-quality-monitor-for-office) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Set & Forget Power:** Ultra-low power e-ink display delivers up to 4 years of battery life—no cables, no hassle. - • **Data-Driven Wellness:** Interactive app tracks 3 months of air quality trends to optimize your environment. - • **Instant Air Quality Alerts:** Color-coded display and buzzer notify you immediately when CO2 levels spike. - • **Breathe Smarter, Work Better:** Real-time CO2, temperature & humidity monitoring for healthier, more productive spaces. - • **Sleek, Portable, Professional:** Compact design fits your office or home, blending style with scientific precision. ## Overview The SAF Aranet4 Home is a premium wireless indoor air quality monitor that tracks CO2, temperature, humidity, and atmospheric pressure with high precision using NDIR sensor technology. Featuring a power-efficient e-ink display and Bluetooth connectivity, it offers up to 4 years of battery life and seamless data access via a user-friendly app with 90 days of historical data. Ideal for offices, schools, and home environments, it empowers professionals to maintain optimal air quality for enhanced focus, health, and well-being. ## Description Product description Aranet Home Co2 Monitor Review: The best Bluetooth wireless air quality/temperature monitor you can get. - This doesn’t monitor for VOCs or PM levels, but if you’re looking for a reliable, low-power, long lasting, wireless (Bluetooth) monitor for CO2, temperature, and humidity, then this is it. The design is about as dead simple as it can get. There is no magnet in this case. If you want to attach it to something, I use 3M Command Strips, and they work very well for me. You don’t have to worry about brightness, because the display is high resolution e-paper, which gives it the super long battery life. Just shine a light on the display, and you will be able to very easily read it. Battery life is measured in terms of multiple months, at least. It is very much a set-and-forget type of device, once you have it wherever you want to measure air quality and temperature. Some well-known travelers even take them onboard airplanes, to help them gauge the quality of the air they are breathing while flying. For me, the only downside is that they connect with Bluetooth (BLE), so while you can connect to them from the Aranet app from pretty much wherever they are or you are in your home, you can’t connect them to your home wifi, so that you could make them part of a broader home air quality monitoring system. For that, you would want the AirThings brand instead. But for a small, portable (if you want), easy to read, Bluetooth accessible air quality/temperature/humidity monitor with an easy-to-use remote monitoring app, you can’t beat this device. Especially not at this price. Review: Important for Brain and Health - We have been using this carbon dioxide (CO₂) monitor for the past 18 months to check carbon dioxide levels in our home and work areas. CO₂ levels are a key measurement to assess the quality of indoor air and ventilation, which are important for minimizing the risk of virus transmission. One of the main reasons we bought it was to monitor how good the ventilation is in our indoor rooms. For example, in our home office, when the readings went up to 1,000+ ppm (parts per million), we noticed that our thinking slowed and we felt more sluggish. Decisions become more difficult to make. Apparently, our experiences match scientific studies that have proven that high levels of carbon dioxide can impair cognitive function and make it harder to think and be productive when CO₂ levels hit 1000 ppm and above. Thanks to this air quality monitor, we also noticed that if a second person enters a room, the CO₂ levels can increase quite rapidly just from our breathing. The CO₂ readings can sometimes double. We open a window to bring it back down to a good range. This monitor is small enough so that you can hold it in your palm and move it around easily. It looks both sleek and functional. Big bonus: it also provides temperature and humidity readings, and you can select either Fahrenheit or Celsius. To have all these readings all on one small device is very handy. It runs on two AA alkaline batteries, which are included. There is a helpful bar showing how much battery life is left. We have had our unit for 18 months, and after continuous use, we have not had to replace the batteries. The e-ink display digits are bright, easy to read, and large (roughly half an inch tall). The large digits and color bar allow you to quickly glance at the device from a distance and assess whether to take action to reduce CO₂ levels. There is an air quality bar that has three colors: green, yellow, and red. Each color corresponds to a different CO₂ level: green for normal (good), yellow for elevated (average), and red for high CO₂ levels (unhealthy). The second reason we purchased this monitor is to get an idea of how high the risk of respiratory virus exposure is. Higher CO₂ levels indicate poor ventilation, which can lead to higher airborne virus concentration. Scientists have found that people in a room with higher CO₂ levels are at a higher risk of virus infection than people in an identical room with lower CO₂ levels. Therefore, knowing when the CO₂ levels are high allows you to know when to reduce risk by opening windows to allow fresh air in, wearing a high-quality respirator mask, and/or reducing the time spent in that space. One feature we like is that you can use it with or without the app. So there is no pressure to use the app. Our only wish is that it came with a protective cover. In sum, this is a high-quality, reliable, and easy-to-use CO₂ monitor that allows you to continually assess air quality and ventilation. This was quite an investment, but well worth it. Highly recommended. ## Features - 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 desertcart'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. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.6 out of 5 stars 1,829 Reviews | ## Product Details - **Battery Description:** Alkaline - **Brand:** SAF - **Color:** White - **Item Weight:** 104 Grams - **Product Dimensions:** 2.76"W x 2.76"H ## Images ![SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History - Image 1](https://m.media-amazon.com/images/I/71neVF9YJvL.jpg) ![SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History - Image 2](https://m.media-amazon.com/images/I/7108u2PCJrL.jpg) ![SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History - Image 3](https://m.media-amazon.com/images/I/81A0FNyISDL.jpg) ![SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History - Image 4](https://m.media-amazon.com/images/I/71VaRer+SOL.jpg) ![SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History - Image 5](https://m.media-amazon.com/images/I/71jgWFULUaL.jpg) ## Questions & Answers **Q: Why do I need monitor CO2 concentration?** A: High CO2 levels can negatively affect your well-being, comfort, and productivity. For example, if CO2 levels reach 1000 ppm, your cognitive abilities drop by 15%. At 1400 ppm and above, they decrease by a staggering 50%. **Q: What is the NDIR sensor and why is it preferred over other types of sensors?** A: Because it provides a higher precision than regular electrochemical sensors because CO2 is uniquely detectable with no interference from other gasses. Besides that the lifespan of the NDIR sensor is much longer and less recalibration is needed. **Q: Why is Aranet4 considered the gold standard in CO2 monitoring?** A: Aranet4 excels with multi-sensor accuracy, real-time alerts, app connectivity, and user-friendly design, highly praised by numerous satisfied customers. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The best Bluetooth wireless air quality/temperature monitor you can get. *by B***S on March 23, 2026* This doesn’t monitor for VOCs or PM levels, but if you’re looking for a reliable, low-power, long lasting, wireless (Bluetooth) monitor for CO2, temperature, and humidity, then this is it. The design is about as dead simple as it can get. There is no magnet in this case. If you want to attach it to something, I use 3M Command Strips, and they work very well for me. You don’t have to worry about brightness, because the display is high resolution e-paper, which gives it the super long battery life. Just shine a light on the display, and you will be able to very easily read it. Battery life is measured in terms of multiple months, at least. It is very much a set-and-forget type of device, once you have it wherever you want to measure air quality and temperature. Some well-known travelers even take them onboard airplanes, to help them gauge the quality of the air they are breathing while flying. For me, the only downside is that they connect with Bluetooth (BLE), so while you can connect to them from the Aranet app from pretty much wherever they are or you are in your home, you can’t connect them to your home wifi, so that you could make them part of a broader home air quality monitoring system. For that, you would want the AirThings brand instead. But for a small, portable (if you want), easy to read, Bluetooth accessible air quality/temperature/humidity monitor with an easy-to-use remote monitoring app, you can’t beat this device. Especially not at this price. ### ⭐⭐⭐⭐⭐ Important for Brain and Health *by R***R on December 24, 2025* We have been using this carbon dioxide (CO₂) monitor for the past 18 months to check carbon dioxide levels in our home and work areas. CO₂ levels are a key measurement to assess the quality of indoor air and ventilation, which are important for minimizing the risk of virus transmission. One of the main reasons we bought it was to monitor how good the ventilation is in our indoor rooms. For example, in our home office, when the readings went up to 1,000+ ppm (parts per million), we noticed that our thinking slowed and we felt more sluggish. Decisions become more difficult to make. Apparently, our experiences match scientific studies that have proven that high levels of carbon dioxide can impair cognitive function and make it harder to think and be productive when CO₂ levels hit 1000 ppm and above. Thanks to this air quality monitor, we also noticed that if a second person enters a room, the CO₂ levels can increase quite rapidly just from our breathing. The CO₂ readings can sometimes double. We open a window to bring it back down to a good range. This monitor is small enough so that you can hold it in your palm and move it around easily. It looks both sleek and functional. Big bonus: it also provides temperature and humidity readings, and you can select either Fahrenheit or Celsius. To have all these readings all on one small device is very handy. It runs on two AA alkaline batteries, which are included. There is a helpful bar showing how much battery life is left. We have had our unit for 18 months, and after continuous use, we have not had to replace the batteries. The e-ink display digits are bright, easy to read, and large (roughly half an inch tall). The large digits and color bar allow you to quickly glance at the device from a distance and assess whether to take action to reduce CO₂ levels. There is an air quality bar that has three colors: green, yellow, and red. Each color corresponds to a different CO₂ level: green for normal (good), yellow for elevated (average), and red for high CO₂ levels (unhealthy). The second reason we purchased this monitor is to get an idea of how high the risk of respiratory virus exposure is. Higher CO₂ levels indicate poor ventilation, which can lead to higher airborne virus concentration. Scientists have found that people in a room with higher CO₂ levels are at a higher risk of virus infection than people in an identical room with lower CO₂ levels. Therefore, knowing when the CO₂ levels are high allows you to know when to reduce risk by opening windows to allow fresh air in, wearing a high-quality respirator mask, and/or reducing the time spent in that space. One feature we like is that you can use it with or without the app. So there is no pressure to use the app. Our only wish is that it came with a protective cover. In sum, this is a high-quality, reliable, and easy-to-use CO₂ monitor that allows you to continually assess air quality and ventilation. This was quite an investment, but well worth it. Highly recommended. ### ⭐⭐⭐⭐⭐ After manual calibration, this is a very awesome battery-powered CO2 sensor *by L***S on April 14, 2022* I've owned several CO2 sensors. In particular, I've had 2 Awair Glow units, 1 first-generation Awair unit, 1 second-generation Awair unit, and a TIM10 CO2 sensor. Of these sensors, the TIM10 is my "gold standard" sensor, but it has the very, very annoying property of requiring AC power. Aranet4 promised to be a battery-powered CO2 sensor that could output data to an app. It delivers, but it requires calibration out-of-the-box, in my opinion. 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. ## Frequently Bought Together - SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History - SAF Aranet Radon Detector for Home: 10-Min Measurement, Temperature, Relative Humidity, Pressure, E-Ink Display, 7-Year Battery, Portable with Free App, Bq/m3 & pCi/L Selectable --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/167490430-saf-aranet4-home-wireless-indoor-air-quality-monitor-for-office](https://www.desertcart.vn/products/167490430-saf-aranet4-home-wireless-indoor-air-quality-monitor-for-office) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-21*