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SAF Aranet4 HOME (TDSPC0H3)
Aranet4 Indoor Air Quality Monitor, Wireless CO2 Detector for Home, Office | 4-year battery life, NDIR sensor. Tracks carbon dioxide, temperature, humidity, and pressure in real time. E-ink screen
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Pocket-sized NDIR monitor with a 0–9999 ppm range and ±(30 ppm + 3% of reading) accuracy, tied for the most accurate listed. Its e-ink screen and 2 AA batteries give up to 4 years of runtime, and a Bluetooth app keeps 90 days of history alongside temperature, humidity and pressure. At 3.5 oz (100 g) and 2.8 in. (71 mm) square, it is one of the smallest and lightest, suiting vans where a set-and-forget monitor matters.
- Price
- $189.00
- Brand
- SAF
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 is lower than 89% of 19 others: 0.23 lbs (0.10 kg)
- Length is lower than 72% of 18 others: 2.80 in. (71 mm)
- Depth/Height is lower than 94% of 18 others: 0.94 in. (24 mm)
Specifications
These details are subject to change and may not be current. Please check Amazon or manufacturer web site to confirm before purchase.
Detection capabilities
- Gases detected
- CO2
- Max. CO2 detection
- 9,999 ppm
- Min. CO2 detection
- 0 ppm
- Accuracy
- ±(30 ppm + 3% of reading)
- Resolution
- 1 ppm
- Sampling interval
- 300 s
- Temperature & humidity readout
- Yes
- Sensor type
- NDIR
- Calibration method
- Factory calibrated, automatic (ABC) and manual fresh-air calibration
- Data logging
- Yes
Alarms
- High alarm level
- 1,400 ppm
- Adjustable alarm levels
- Yes
- Alarm types
- Color-coded screen and optional buzzer
Physical Attributes
- Weight
- 0.23 lbs
- Weight
- 0.10 kg
- Length
- 2.80 in.
- Length
- 71 mm
- Width
- 2.80 in.
- Width
- 71 mm
- Depth/Height
- 0.94 in.
- Depth/Height
- 24 mm
- Display type
- E-ink
- IP rating
- IP20
Power
- Power sources
- 2 AA batteries
Core specs
- Battery chemistry
- Alkaline (AA, included); lithium AA also supported
Operating Temp Range
- Operating temp min
- 32 ℉
- Operating temp max
- 122 ℉
- Operating temp min
- 0 ℃
- Operating temp max
- 50 ℃
- Max operating humidity
- 85 % RH
Certifications
- Certifications summary
- CE, FCC, ISED
- FCC Part 15 compliant
- Yes
- CE marked
- Yes
More specifications
- Warranty
- 2 Years
Features
Details from the SAF Aranet4 HOME (TDSPC0H3) Amazon listing:
- 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.
Similar products from other brands
Chosen for their similar specifications and price.
 This productSAF Aranet4 HOME (TDSPC0H3) |
 Inkbird IAM-T1 |
 Airthings 322 |
 Temtop M2000 2nd Generation |
|
|---|---|---|---|---|
| Price | $189.00 | $129.99 | $119.00 | $209.99 |
| Model | Aranet4 HOME (TDSPC0H3) | IAM-T1 | 322 | M2000 2nd Generation |
| Gases detected | CO2 | CO2 | CO2 and VOC | CO2 and formaldehyde (HCHO) |
| Max. CO2 detection (ppm) | 9,999 | 9,999 | 5,000 | 5,000 |
| Min. CO2 detection (ppm) | 0 | 0 | 400 | 0 |
| Accuracy | ±(30 ppm + 3% of reading) | ±(30 ppm + 3% of reading) | ±50 ppm ±5% | ±50 ppm + 5% of reading |
| Resolution (ppm) | 1 | 1 | – | 1 |
| Sampling interval (s) | 300 | 60 | 300 | – |
| Temperature & humidity readout | Yes | Yes | Yes | Yes |
| Sensor type | NDIR | NDIR (Senseair) | NDIR | NDIR |
| Calibration method | Factory calibrated, automatic (ABC) and manual fresh-air calibration | Built-in auto-calibration; manual calibration via app | Automatic baseline calibration, updated weekly | – |
| Data logging | Yes | Yes | – | Yes |
| High alarm level (ppm) | 1,400 | 1,400 | – | – |
| Adjustable alarm levels | Yes | Yes | – | Yes |
| Alarm types | Color-coded screen and optional buzzer | Buzzer sound and on-screen alarm | – | – |
| Weight (lbs) | 0.23 | 0.30 | 0.22 | 0.50 |
| Weight (kg) | 0.10 | 0.14 | 0.10 | 0.23 |
| Length (in.) | 2.80 | 2.95 | 3.15 | 8.80 |
| Length (mm) | 71 | 75 | 80 | 224 |
| Width (in.) | 2.80 | 3.15 | 3.15 | 2.80 |
| Width (mm) | 71 | 80 | 80 | 74 |
| Depth/Height (in.) | 0.94 | 1.30 | 1.06 | 1.40 |
| Depth/Height (mm) | 24 | 33 | 27 | 38 |
| Display type | E-ink | 2.13-inch electronic ink (e-ink) display | – | TFT color screen |
| IP rating | IP20 | – | – | – |
| Power sources | 2 AA batteries | 2 x AA batteries | 2 AA batteries | – |
| DC input voltage | – | 3V | – | 5V |
| Charging port | – | – | – | USB |
| Battery runtime (hours) | – | – | – | 8 |
| Battery capacity (mAh) | – | – | – | 3,000 |
| Battery chemistry | Alkaline (AA, included); lithium AA also supported | Alkaline (2 x AA) | AA alkaline | – |
| Operating temp min (℉) | 32 | 32 | 32 | 32 |
| Operating temp max (℉) | 122 | 122 | 113 | 122 |
| Operating temp min (℃) | 0 | 0 | 0 | 0 |
| Operating temp max (℃) | 50 | 50 | 45 | 50 |
| Max operating humidity (% RH) | 85 | – | 95 | 90 |
| Certifications summary | CE, FCC, ISED | FCC Part 15 Class B statement | FCC Part 15 (FCC ID 2APPT-322), IC 23900-322 | – |
| FCC Part 15 compliant | Yes | Yes | Yes | – |
| CE marked | Yes | – | – | – |
| Warranty | 2 Years | 1 Year | 5 Years with Registration | 1 Year |
Data sources
Data for this product compiled from these sources:
Specifications last updated Oct 20, 2026.