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Amprobe CO2-100
Amprobe CO2-100 Handheld Carbon Dioxide Meter
Only 4 left in stock (more on the way).
Professional handheld CO2 meter with a 0–9999 ppm range, ±30 ppm ±5% accuracy, 1-second sampling and a 30 s response time. Its triple LCD shows live, 15-minute and 8-hour average CO2 along with temperature, humidity, dew point and wet bulb, and its 80 dB alarm is tied for the loudest listed. Among the most expensive units, it suits HVAC-style testing more than routine monitoring in a vehicle.
- Price
- $477.16
- Brand
- Amprobe
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:
- Sampling interval 1 s: lower than 71% of 7 others
- Length 8.27 in.: higher than 94% of 18 others
- Length 210 mm: higher than 94% of 18 others
- Depth/Height 58 mm: higher than 72% 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.
Detection capabilities
- Gases detected
- CO2
- Max. CO2 detection
- 9,999 ppm
- Min. CO2 detection
- 0 ppm
- Accuracy
- ±30 ppm ±5% of reading
- Resolution
- 1 ppm
- Response time (T90)
- 30 s
- Sampling interval
- 1 s
- Temperature & humidity readout
- Yes
- Sensor type
- NDIR
- Calibration method
- Manual fresh-air calibration (400 ppm default)
Alarms
- Alarm loudness
- 80 dB
- Adjustable alarm levels
- Yes
- Alarm types
- Audible beeper
Physical Attributes
- Weight
- 0.40 lbs
- Weight
- 0.18 kg
- Length
- 8.27 in.
- Length
- 210 mm
- Width
- 2.76 in.
- Width
- 70 mm
- Depth/Height
- 2.28 in.
- Depth/Height
- 58 mm
- Display type
- Backlit LCD, triple display
Power
- Power sources
- 4 AA batteries or 9V/1A DC adapter
- DC input voltage
- 9V
Operating Temp Range
- Operating temp min
- 32 ℉
- Operating temp max
- 122 ℉
- Operating temp min
- 0 ℃
- Operating temp max
- 50 ℃
- Max operating humidity
- 95 % RH
Certifications
- Certifications summary
- CE marking, conforms to EN61326-1 (EMC)
- CE marked
- Yes
More specifications
- Warranty
- 1 Year
Features
- Handheld digital meter measures ambient level of carbon dioxide (CO2) to monitor indoor air quality and performance of heating, ventilation, and air-conditioning systems
- Displays current CO2 levels, long-term average CO2 levels measured over an 8-hour period, and short-term average CO2 levels measured over a 15-minute period
- Alarm notifies operator when CO2 levels reach or exceed a preset threshold, CO2 measurement up to 9999 ppm
- Liquid crystal display (LCD) shows ambient CO2 levels, as well as air, wet bulb, or dew point temperature and humidity
- Manual calibration helps ensure accurate humidity and CO2 readings
Similar products from other brands
Chosen for their similar specifications and price.
 This productAmprobe CO2-100 |
 Extech CO250 |
 Temtop M2000 2nd Generation |
 Inkbird IAM-T1 |
|
|---|---|---|---|---|
| Price | $477.16 | $483.47 | $209.99 | $129.99 |
| Model | CO2-100 | CO250 | M2000 2nd Generation | IAM-T1 |
| Gases detected | CO2 | CO2 | CO2 and formaldehyde (HCHO) | CO2 |
| Max. CO2 detection (ppm) | 9,999 | 5,000 | 5,000 | 9,999 |
| Min. CO2 detection (ppm) | 0 | 0 | 0 | 0 |
| Accuracy | ±30 ppm ±5% of reading | ±(5% rdg + 50 ppm) | ±50 ppm + 5% of reading | ±(30 ppm + 3% of reading) |
| Resolution (ppm) | 1 | 1 | 1 | 1 |
| Response time (T90) (s) | 30 | – | – | – |
| Sampling interval (s) | 1 | 1 | – | 60 |
| Temperature & humidity readout | Yes | Yes | Yes | Yes |
| Sensor type | NDIR | NDIR | NDIR | NDIR (Senseair) |
| Calibration method | Manual fresh-air calibration (400 ppm default) | Factory calibrated to 400 ppm; manual calibration in 400 ppm chamber | – | Built-in auto-calibration; manual calibration via app |
| Data logging | – | – | Yes | Yes |
| High alarm level (ppm) | – | – | – | 1,400 |
| Alarm loudness (dB) | 80 | 80 | – | – |
| Adjustable alarm levels | Yes | Yes | Yes | Yes |
| Alarm types | Audible beeper | Audible | – | Buzzer sound and on-screen alarm |
| Weight (lbs) | 0.40 | 0.42 | 0.50 | 0.30 |
| Weight (kg) | 0.18 | 0.19 | 0.23 | 0.14 |
| Length (in.) | 8.27 | 7.90 | 8.80 | 2.95 |
| Length (mm) | 210 | 200 | 224 | 75 |
| Width (in.) | 2.76 | 2.70 | 2.80 | 3.15 |
| Width (mm) | 70 | 70 | 74 | 80 |
| Depth/Height (in.) | 2.28 | 2.30 | 1.40 | 1.30 |
| Depth/Height (mm) | 58 | 57 | 38 | 33 |
| Display type | Backlit LCD, triple display | Triple backlit LCD | TFT color screen | 2.13-inch electronic ink (e-ink) display |
| Power sources | 4 AA batteries or 9V/1A DC adapter | 4 AA batteries, 9V AC adapter | – | 2 x AA batteries |
| DC input voltage | 9V | – | 5V | 3V |
| Charging port | – | – | USB | – |
| Battery runtime (hours) | – | 24 | 8 | – |
| Battery capacity (mAh) | – | – | 3,000 | – |
| Battery chemistry | – | – | – | Alkaline (2 x AA) |
| Operating temp min (℉) | 32 | 32 | 32 | 32 |
| Operating temp max (℉) | 122 | 122 | 122 | 122 |
| Operating temp min (℃) | 0 | 0 | 0 | 0 |
| Operating temp max (℃) | 50 | 50 | 50 | 50 |
| Max operating humidity (% RH) | 95 | 95 | 90 | – |
| Certifications summary | CE marking, conforms to EN61326-1 (EMC) | CE | – | FCC Part 15 Class B statement |
| FCC Part 15 compliant | – | – | – | Yes |
| CE marked | Yes | Yes | – | – |
| Warranty | 1 Year | 2 Years | 1 Year | 1 Year |
Data sources
Data for this product compiled from these sources:
Specifications last updated Oct 20, 2026.