--- product_id: 313661398 title: "Smart 128s Air Quality Monitor Indoor CO2 PM2.5 TVOC Meter Formaldehyde HCHO Detector VOCs Pollution AQI Tester PM1.0 PM10 Dust Particle Counter Data Logger Home" brand: "blatn" price: "$413.25" currency: USD in_stock: true reviews_count: 9 category: "Blatn" url: https://www.desertcart.us/products/313661398-smart-128s-air-quality-monitor-indoor-co2-pm2-5-tvoc store_origin: US region: United States of America --- # 8GB data logging, 400 days storage NDIR CO2 & electrochemical HCHO sensors 6-channel laser particle detection Smart 128s Air Quality Monitor Indoor CO2 PM2.5 TVOC Meter Formaldehyde HCHO Detector VOCs Pollution AQI Tester PM1.0 PM10 Dust Particle Counter Data Logger Home **Brand:** blatn **Price:** $413.25 **Availability:** ✅ In Stock ## Summary > 🌬️ Breathe Smart, Live Better — Your Air’s Best Ally! ## Quick Answers - **What is this?** Smart 128s Air Quality Monitor Indoor CO2 PM2.5 TVOC Meter Formaldehyde HCHO Detector VOCs Pollution AQI Tester PM1.0 PM10 Dust Particle Counter Data Logger Home by blatn - **How much does it cost?** $413.25 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/313661398-smart-128s-air-quality-monitor-indoor-co2-pm2-5-tvoc) ## Best For - blatn enthusiasts ## Why This Product - Trusted blatn brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Advanced Gas Sensors:** NDIR CO2 and platinum-electrode formaldehyde sensors with auto-calibration ensure reliable air toxicity readings. - • **Comprehensive VOC Monitoring:** Semiconductor TVOC sensor tracks harmful organic compounds down to thousandth-level molecular changes. - • **Robust Data Logging & Export:** Supports up to 8GB storage with minute-by-minute data export for trend analysis and professional reporting. - • **Silent, Smart & Durable Design:** Whisper-quiet fan, anti-fall soft shell, and US-standard AQI alarms keep your environment safe without disruption. - • **Precision Laser Particle Sensing:** Real-time detection of PM0.3 to PM10 for ultra-accurate indoor dust monitoring. ## Overview The Smart 128s Air Quality Monitor is a professional-grade, portable device that measures indoor air pollutants including PM0.3 to PM10 particles, CO2, formaldehyde (HCHO), and TVOCs with high precision sensors. Featuring 6-channel laser particle counting, NDIR CO2 detection, and electrochemical formaldehyde sensing, it offers real-time, reliable air quality data. With an 8GB expandable memory, it logs up to 400 days of minute-by-minute data, exportable for detailed analysis. Designed with silent operation, US-standard AQI alarms, and a durable anti-fall shell, it’s ideal for health-conscious professionals seeking to optimize their indoor environment. ## Description Product description Fault description The machine suddenly shut down by itself, rebooting only lasts a second or two, or it can not turn on. Solution: If the TF memory card is full, please replace it with a new card in time. Otherwise, there may be a sudden automatic shutdown of the machine, and can not open the machine. If the above problems occur, try the following steps to rectify the fault 1. Take out the TF memory card on the bottom of the machine 2. After power off, connect the charger to charge for more than 6 hours and then turn it on without the TF memory card to see if it can work. 6-channel Particle Number High precision laser particle sensor User can view 6-channel particle count 0.3 0.5 1.0 2.5 5.0 10 and PM1.0 reading by switching the Curve Button (mode switch button) PM0.3 PM0.5 PM1.0 PM2.5 PM5.0 PM10 NDIR CO2 optical measurement Full scale Temp. correction Absorption gas chamber optical coating 72-hour Automatic baseline calibration The percentage of constant constituents in the air is almost constant within 100km from the ground. In terms of volume content, oxygen accounts for approximately 20.95%, nitrogen accounts for approximately 78.09%, and CO2 is approximately 0.03%. The carbon dioxide concentration in the atmospheric environment is very stable, with a value of about 400ppm, even in a clean environment. Data record and data export TF memory card memory card that storage 100K+ data records Data storage frequency: once a minute Connect the computer via Card Reader Data records can be exported in TXT file You can use Excle to open TXT files to analyze data trends Air Quality Assessment AQI Alarm Air quality alarm threshold base on US standard PM2.5: 0-12μg/m³ Good PM10: 0-54μg/m³ Good CO2: 400-700ppm Good TVOC: 0-5.0mg/m³ Good HCHO: 0-0.1mg/m³ Good 3-way circular air convection Active air interaction system increases contact area with the sensor mute fan with low noise Quality design 2.4-inch TFT liquid crystal display Energy absorption seismic design Data curve trend Precautions for Use Regarding machine reading is high on first use Reason: Because the packaging material itself contains interference gas, and it is sealed in the box for a long time, the charge attached to the surface of the sensor will increase, causing the value of the machine to be biased when it is turned on. Solution: After receiving the machine, put it in an outdoor clean and ventilated environment for about 8 hours, so that the charge can be released. (Charger can be connected to ensure the power supply) Regarding the high TVOC level Please check your measuring point if there are some human activities such as cooking, smoking, drinking or some chemical gases such as perfume, air freshener, detergent, etc. Then try to put the machine in an outdoor clean and ventilated environment for more than 3 hours to see if the machine value will drop. About CO2 sensor calibration The CO2 sensor adopts 72-hour automatic baseline calibration. Plug in the charger, turn on the machine, click the test button, and let the machine run continuously for more than 72 hours. About TVOC and HCHO calibration We should calibrate the equipment in fresh outdoor air, because particulate pollution and chemical pollution are two different types of pollution. Very low particulate matter does not mean that chemical pollution and interfering gases do not exist. To verify whether the machine sensor is normal, please pick up the machine to the mouth, blow hard into the air inlet of the machine, see if the value changes. Test purifying effect of purifier: light a cigarette in a room, place our machine in this room, wait for the readings to go up, and then place the machine next to the hePA filter in another room to see if the high readings go down. Put our machine directly next to the purifier and the reading might not change much. Because there is no change in the air concentration in a normal environment, and when you turn on the purifier, it is impossible to make the reading of air quality monitor become very low. To ensure accurate readings, please test more than 20 minutes: After the machine is turned on, click the yellow test button and the machine will start reading. When the machine is just started to run, the value is constantly changing, because it takes a process for the value to rise from 0. After the machine runs for about 20 minutes and the reading tends to be stable. When we test the air quality in a room, in order to ensure accurate results, we should keep the machine away from some interference factors, such as some perfume, incense, freshener, detergent and other interference gases, as well as smoking, cooking, drinking, human breathing and other human interference factors. Review: 10 months review - I have asthma and have this unit monitoring air quality in my living space 24/7 (connected to wall outlet via usb port adapter). Particles count seems to be accurate since it agrees with my air max 320 HEPA filter. VOCs sensor sensitive to any strong smell (food, paint, dish soap, etc). In order for unit to be accurate you need to leave it where you need to measure for at least an hour or so. Compared to other units on the market this is probably the best bang for the buck for instant readings. I also have an air wave sensor but that one seems to be better for longer term averages than instant readings. Battery life on unit is very short so I just keep it plugged in. Does not feel cheap, appears well built but user interface could use a refresh or update. Review: Bueno - Cumple lo indicado en la descripción buena relacion precio calidad ## Features - FINE PARTICLE DUST LEVEL -- Laser air quality sensor can measure indoor dust level in real time. 6-channel tiny particle number detection (Number of particles/liter)--PM0.3, PM0.5, PM1.0, PM2.5, PM5.0, PM10; 3-channel particulate matters quality detection (μg/m³)--PM1.0, PM2.5, PM10 - CO2 SENSOR & HCHO SENSOR -- NDIR Non-Spectral Infrared CO2 Carbon Dioxide Sensor with self-calibration, Absorption chamber Optical Coating; Electrochemical formaldehyde HCHO sensor with automatic calibration, double platinum catalytic electrode, strong anti-interference ability - TVOC CHEMICAL POLLUTION -- Semiconductor TVOC VOCmeter can test a variety of volatile organic compounds TVOC VOC, such as benzene, toluene, xylene, aromatic hydrocarbons, aldehydes, hydrogen sulfide etc., captures the change in molecular concentration of organic compounds at the thousandth level - DATA LOGGING UPGTADE -- Portable handheld Smart air quality monitor indoor: Support data storage and export of all 12 testing items, with date and time, frequency: once every 1 minute. MAX storage capacity can be expanded to 8G, which can store up to 400 days of records - PROFESSIONAL & ORIGINAL-- air quality alarm base on US standard; 2200 mAh rechargeable lithium battery; stereo air convection sampling and active air interactive system; Silent fan without noise; Anti-fall PE soft shell ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08YRVGCSV | | Best Sellers Rank | #376,625 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #436 in Indoor Air Quality Meters | | Brand | BLATN | | Brand Name | BLATN | | Customer Reviews | 3.9 out of 5 stars 59 Reviews | | Included Components | air quality tester, Batteries, charging cord, TF memory card | | Item Dimensions | 2.55 x 1.57 x 5.5 inches | | Item Type Name | air quality measuring equipment | | Item Weight | 0.48 Pounds | | Item dimensions L x W x H | 2.55 x 1.57 x 5.5 inches | | Manufacturer | BLATN TECH | | Model | BR-SMART | | Number of Items | 1 | | Part Number | CO2+PM+TVOC+HCHO+Particle+Memory card | | Style | portable handheld device home | | Style Name | portable handheld device home | | Unit Count | 1.0 Count | ## Product Details - **Alarm:** Air quality level alarm - **Brand:** BLATN - **Color:** green black - **Item Weight:** 7.68 ounces - **Operating Humidity:** 0-90%RH - **Power Source:** Battery Powered - **Product Dimensions:** 2.55"D x 1.57"W x 5.5"H - **Sensor Type:** Electrochemical, laser, semiconductor, NDIR - **Style:** portable handheld device home - **Unit Count:** 1.0 Count ## Images ![Smart 128s Air Quality Monitor Indoor CO2 PM2.5 TVOC Meter Formaldehyde HCHO Detector VOCs Pollution AQI Tester PM1.0 PM10 Dust Particle Counter Data Logger Home - Image 1](https://m.media-amazon.com/images/I/61D53l-c3+L.jpg) ## Questions & Answers **Q: Can this detect mold?** A: Sorry, our air quality monitor can not detect mold, thank you. **Q: What is the operating temperature? Low & high end.** A: operating temperature: 0-50 ℃ **Q: How long does the battery last? if i turn it on and leave it, would it continuously measure data every min for 4 months?** A: It lasts 4-5 hours on a full charge. The memory card we are equipped with has a capacity of 128M, which can store 100,000 records. If you need to store more records, you can change the memory card with a larger capacity, which can support up to 8GB. **Q: Does this meter also come with a warranty or customer service/support beyond a few months?** A: Yes sure, the warranty: 1 year. Beyond the warranty period we will also provide full service and support. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 10 months review *by S***Y on October 18, 2022* I have asthma and have this unit monitoring air quality in my living space 24/7 (connected to wall outlet via usb port adapter). Particles count seems to be accurate since it agrees with my air max 320 HEPA filter. VOCs sensor sensitive to any strong smell (food, paint, dish soap, etc). In order for unit to be accurate you need to leave it where you need to measure for at least an hour or so. Compared to other units on the market this is probably the best bang for the buck for instant readings. I also have an air wave sensor but that one seems to be better for longer term averages than instant readings. Battery life on unit is very short so I just keep it plugged in. Does not feel cheap, appears well built but user interface could use a refresh or update. ### ⭐⭐⭐⭐⭐ Bueno *by S***. on May 8, 2025* Cumple lo indicado en la descripción buena relacion precio calidad ### ⭐⭐⭐ internal battery can’t be recharged or replaced *by D***Y on August 28, 2025* The device worked well initially, but after some time the battery completely died. Since the internal battery cannot be recharged or replaced, the device can no longer be turned on and is now completely non-operational. Very disappointing. ## Frequently Bought Together - BLATN Smart 128s Air Quality Monitor Indoor CO2 PM2.5 TVOC Meter Formaldehyde HCHO Detector VOCs Pollution AQI Tester PM1.0 PM10 Dust Particle Counter Data Logger Home - Temtop Air Quality Monitor CO2 Detector Professional Carbon Dioxide PM2.5 PM10 Formaldehyde Temperature and Humidity Monitor w/Audio Alarm Data Export (M2000 2nd) - Temtop Air Quality Monitor PM2.5 PM10 Particle Counter, Formaldehyde, Temperature, Humidity, TVOC AQI Tester for Indoor/Outdoor Air Pollution Detection w/Data Export --- ## 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.us/products/313661398-smart-128s-air-quality-monitor-indoor-co2-pm2-5-tvoc](https://www.desertcart.us/products/313661398-smart-128s-air-quality-monitor-indoor-co2-pm2-5-tvoc) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-13*