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BREATHE BTL40001
BREATHE Airmonitor Plus Gen 2 Indoor Air Quality Monitor, CO2, PM2.5, TVOC | Professional-Grade NDIR Sensor, PM1, PM10, TVOC, Formaldehyde, Smart Alerts, 90-Day History, CSV Export. 6 Hour Battery Life.
In Stock
Eight-in-one air monitor tracking CO2 by NDIR alongside PM1, PM2.5, PM10, TVOC, formaldehyde, temperature and humidity on a color display. It connects over 2.4 GHz Wi-Fi for alerts, 90-day history and CSV export, and can run continuously on USB-C power. Its 6-hour battery is the shortest listed, so it fits rigs with steady USB power that want particle and chemical readings as well as CO2.
- Price
- $129.99
- Brand
- BREATHE
Prices from Amazon as of . Product prices and availability are accurate as of the date and time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of the product. As an Amazon Associate I earn from qualifying purchases.
How it compares
Compared with the other carbon dioxide detectors on this site that list each value:
- Weight 0.25 lbs: lower than 73% of 19 others
- Weight 0.11 kg: lower than 73% of 19 others
- Length 1.40 in.: lower than 83% of 18 others
- Length 36 mm: lower than 83% of 18 others
- Depth/Height 3.30 in.: higher than 77% of 18 others
- Depth/Height 84 mm: higher than 77% of 18 others
Specifications
These details are subject to change and may not be current. Please check Amazon or manufacturer web site to confirm before purchase.
- Model
- BTL40001
- Manufacturer page
- Link
Detection capabilities
- Gases detected
- CO2, TVOC and formaldehyde
- Temperature & humidity readout
- Yes
- Sensor type
- NDIR
- Data logging
- Yes
Physical Attributes
- Weight
- 0.25 lbs
- Weight
- 0.11 kg
- Length
- 1.40 in.
- Length
- 36 mm
- Width
- 2.80 in.
- Width
- 71 mm
- Depth/Height
- 3.30 in.
- Depth/Height
- 84 mm
More specifications
- Warranty
- 2 Years
Features
- NEW GEN 2 AIR QUALITY MONITOR – 90-DAY HISTORY & 6-HOUR BATTERY: The latest BREATHE Airmonitor Plus Gen 2 features upgraded battery performance with up to 6 hours of portable use, plus 90-day app data history and data export. Monitor longer, review historical trends and export your indoor air quality data for deeper analysis.
- PROFESSIONAL 8-IN-1 INDOOR AIR QUALITY MONITOR: Track CO₂, PM1, PM2.5, PM10, TVOC, Formaldehyde (HCHO), Temperature and Humidity in real time. This home air quality monitor combines multiple sensors to give you a detailed picture of the air in your home, office, classroom or bedroom.
- PRECISION CO2 MONITOR + PARTICLE & VOC SENSORS: More than a basic CO2 meter, Airmonitor Plus combines NDIR CO₂ measurement with laser particle sensing and dedicated TVOC and formaldehyde detection. Monitor gases and airborne particles together with one compact indoor air quality meter.
- SMART APP, ALERTS, 90-DAY HISTORY & DATA EXPORT: Connect your air monitor to the free Breathe Tech app via 2.4 GHz Wi-Fi for remote readings, configurable CO₂ and PM2.5 alerts, historical graphs and up to 90 days of stored data. Export your readings for detailed analysis and long-term air quality tracking.
- UNDERSTAND WHAT'S CHANGING YOUR INDOOR AIR: See how cooking, cleaning products, occupancy, HVAC operation and ventilation affect CO₂, particulate matter and VOC levels. Real-time readings help you identify patterns and make informed decisions about your indoor environment
- HOME AIR QUALITY TESTING MADE SIMPLE: Use Airmonitor Plus as an easy-to-understand air quality tester for home without complicated sampling or laboratory equipment. See readings directly on the color display or use the app to review graphs, history and trends.
- FORMALDEHYDE DETECTOR & VOC MONITOR: Monitor TVOCs and formaldehyde (HCHO) released by cleaning products, furnishings, paints, adhesives and other household sources. Airmonitor Plus provides continuous measurements so you can see when indoor chemical pollutant levels change.
- PM2.5 AIR QUALITY MONITOR – PM1, PM2.5 & PM10: Precision laser particle sensing continuously measures three particulate sizes, helping identify changes associated with cooking, smoke, dust and other airborne particles. View particulate levels alongside CO₂, TVOC, HCHO, temperature and humidity.
- COMPACT, PORTABLE & EASY TO SET UP: The upgraded Gen 2 rechargeable design provides up to 6 hours of portable monitoring and can also operate while connected to USB-C power for continuous use. Quick CO₂ calibration and simple app pairing make setup straightforward for home, office, bedroom or classroom monitoring.
Similar products from other brands
Chosen for their similar specifications and price.
 This productBREATHE BTL40001 |
 briidea BR-169 |
 ATuMan CF1 |
 SAF Aranet4 HOME (TDSPC0H3) |
|
|---|---|---|---|---|
| Price | $129.99 | $74.99 | $59.99 | $189.00 |
| Model | BTL40001 | BR-169 | CF1 | Aranet4 HOME (TDSPC0H3) |
| Gases detected | CO2, TVOC and formaldehyde | – | CO2 | CO2 |
| Max. CO2 detection (ppm) | – | – | 5,000 | 9,999 |
| Min. CO2 detection (ppm) | – | – | 400 | 0 |
| Accuracy | – | – | – | ±(30 ppm + 3% of reading) |
| Resolution (ppm) | – | – | – | 1 |
| Sampling interval (s) | – | – | – | 300 |
| Temperature & humidity readout | Yes | – | Yes | Yes |
| Sensor type | NDIR | – | NDIR | NDIR |
| Calibration method | – | – | – | Factory calibrated, automatic (ABC) and manual fresh-air calibration |
| Data logging | Yes | – | – | Yes |
| High alarm level (ppm) | – | – | – | 1,400 |
| Adjustable alarm levels | – | – | – | Yes |
| Alarm types | – | – | – | Color-coded screen and optional buzzer |
| Weight (lbs) | 0.25 | 0.31 | 0.46 | 0.23 |
| Weight (kg) | 0.11 | 0.14 | 0.21 | 0.10 |
| Length (in.) | 1.40 | 0.87 | 1.20 | 2.80 |
| Length (mm) | 36 | 22 | 30 | 71 |
| Width (in.) | 2.80 | 2.56 | 3.50 | 2.80 |
| Width (mm) | 71 | 65 | 89 | 71 |
| Depth/Height (in.) | 3.30 | 4.06 | 3.50 | 0.94 |
| Depth/Height (mm) | 84 | 103 | 89 | 24 |
| Display type | – | – | 3.0-inch LED display | E-ink |
| IP rating | – | – | – | IP20 |
| Power sources | – | – | – | 2 AA batteries |
| Charging port | – | – | USB-C | – |
| Battery capacity (mAh) | – | – | 2,200 | – |
| Battery chemistry | – | – | – | Alkaline (AA, included); lithium AA also supported |
| Operating temp min (℉) | – | – | – | 32 |
| Operating temp max (℉) | – | – | – | 122 |
| Operating temp min (℃) | – | – | – | 0 |
| Operating temp max (℃) | – | – | – | 50 |
| Max operating humidity (% RH) | – | – | – | 85 |
| Certifications summary | – | – | – | CE, FCC, ISED |
| FCC Part 15 compliant | – | – | – | Yes |
| CE marked | – | – | – | Yes |
| Warranty | 2 Years | 2 Years | – | 2 Years |
Data sources
Data for this product compiled from these sources:
Specifications last updated Oct 20, 2026.