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Extech VFM200
Extech VFM200 VOC/Formaldehyde Meter | TVOC, formaldehyde, CO2, temp, humidity, dew point, NDIR + electrochemical sensors, color display, datalogging
Only 13 left in stock - order soon.
Mainly a formaldehyde and TVOC meter, this handheld uses electrochemical and semiconductor sensors, with a backlit LCD, audible and visual formaldehyde alarms, datalogging and a 1300 mAh rechargeable battery. At 1.3 lbs (580 g) it is one of the heavier units and premium-priced, aimed at inspectors more than everyday monitoring in a vehicle. Its specifications list only formaldehyde and TVOC sensing, while the listing also claims CO2 readings.
- Price
- $428.50
- Brand
- Extech
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 1.29 lbs: higher than 94% of 19 others
- Weight 0.58 kg: higher than 94% of 19 others
- Width 2.40 in.: lower than 83% of 18 others
- Width 60 mm: lower than 83% of 18 others
- Depth/Height 1.00 in.: lower than 83% of 18 others
- Depth/Height 25 mm: lower than 83% 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
- Formaldehyde and TVOC
- Accuracy
- ±5% FS
- Sensor type
- Electrochemical (HCHO), MOS semiconductor (TVOC)
- Calibration method
- Annual calibration recommended; NIST traceable calibration offered
Alarms
- Alarm types
- Audible and visual (LCD flashes red, beeper) for HCHO
Physical Attributes
- Weight
- 1.29 lbs
- Weight
- 0.58 kg
- Length
- 6.50 in.
- Length
- 165 mm
- Width
- 2.40 in.
- Width
- 60 mm
- Depth/Height
- 1.00 in.
- Depth/Height
- 25 mm
- Display type
- Backlit LCD
Power
- Power sources
- Rechargeable battery and AC adapter
Charging
- Battery capacity
- 1,300 mAh
Core specs
- Battery chemistry
- Lithium-ion polymer
Operating Temp Range
- Operating temp min
- 32 ℉
- Operating temp max
- 104 ℉
- Operating temp min
- 0 ℃
- Operating temp max
- 40 ℃
Certifications
- Certifications summary
- CE
- CE marked
- Yes
More specifications
- Warranty
- 2 Years
Features
- All-in-One Indoor Air Quality Monitor – Tracks VOCs, formaldehyde, CO₂, temperature, humidity, dew point, and wet bulb in one device, giving you the power to fully understand your environment.
- Reliable NDIR and Electrochemical Sensors – Uses advanced non-dispersive infrared and electrochemical technology for accurate, stable readings that professionals can trust in both residential and commercial spaces.
- User-Friendly Color Display – Bright, easy-to-read screen simultaneously shows multiple parameters with clear visual indicators, so you never miss critical changes in indoor air quality.
- Built-In Datalogging with Trend Analysis – Stores thousands of data points with time and date stamp, making it easy to review long-term air quality trends for compliance, safety, or research.
- Portable, Professional, and Versatile – Compact design with intuitive controls makes it perfect for HVAC technicians, industrial hygienists, environmental inspectors, and even homeowners serious about air safety.
Similar products from other brands
Chosen for their similar specifications and price.
 This productExtech VFM200 |
 Airthings 2960 |
 Amprobe CO2-100 |
 Temtop M2000 2nd Generation |
|
|---|---|---|---|---|
| Price | $428.50 | $329.99 | $477.16 | $209.99 |
| Model | VFM200 | 2960 | CO2-100 | M2000 2nd Generation |
| Gases detected | Formaldehyde and TVOC | CO2, VOC and radon | CO2 | CO2 and formaldehyde (HCHO) |
| Max. CO2 detection (ppm) | – | 5,000 | 9,999 | 5,000 |
| Min. CO2 detection (ppm) | – | 400 | 0 | 0 |
| Accuracy | ±5% FS | ±50 ppm ±5% | ±30 ppm ±5% of reading | ±50 ppm + 5% of reading |
| Resolution (ppm) | – | – | 1 | 1 |
| Response time (T90) (s) | – | – | 30 | – |
| Sampling interval (s) | – | 300 | 1 | – |
| Temperature & humidity readout | – | Yes | Yes | Yes |
| Sensor type | Electrochemical (HCHO), MOS semiconductor (TVOC) | NDIR | NDIR | NDIR |
| Calibration method | Annual calibration recommended; NIST traceable calibration offered | Automatic baseline calibration, updated weekly | Manual fresh-air calibration (400 ppm default) | – |
| Data logging | – | – | – | Yes |
| Alarm loudness (dB) | – | – | 80 | – |
| Adjustable alarm levels | – | – | Yes | Yes |
| Alarm types | Audible and visual (LCD flashes red, beeper) for HCHO | – | Audible beeper | – |
| Weight (lbs) | 1.29 | 0.79 | 0.40 | 0.50 |
| Weight (kg) | 0.58 | 0.36 | 0.18 | 0.23 |
| Length (in.) | 6.50 | 6.69 | 8.27 | 8.80 |
| Length (mm) | 165 | 170 | 210 | 224 |
| Width (in.) | 2.40 | 3.54 | 2.76 | 2.80 |
| Width (mm) | 60 | 90 | 70 | 74 |
| Depth/Height (in.) | 1.00 | 1.30 | 2.28 | 1.40 |
| Depth/Height (mm) | 25 | 33 | 58 | 38 |
| Display type | Backlit LCD | 2.9-inch E Ink (ePaper) display | Backlit LCD, triple display | TFT color screen |
| Power sources | Rechargeable battery and AC adapter | 6 AA batteries, USB-C | 4 AA batteries or 9V/1A DC adapter | – |
| DC input voltage | – | – | 9V | 5V |
| Charging port | – | – | – | USB |
| Battery runtime (hours) | – | – | – | 8 |
| Battery capacity (mAh) | 1,300 | – | – | 3,000 |
| Battery chemistry | Lithium-ion polymer | – | – | – |
| Operating temp min (℉) | 32 | 39 | 32 | 32 |
| Operating temp max (℉) | 104 | 104 | 122 | 122 |
| Operating temp min (℃) | 0 | 4 | 0 | 0 |
| Operating temp max (℃) | 40 | 40 | 50 | 50 |
| Max operating humidity (% RH) | – | 85 | 95 | 90 |
| Certifications summary | CE | FCC Part 15 (FCC ID 2APPT-2960), IC 23900-2960 | CE marking, conforms to EN61326-1 (EMC) | – |
| FCC Part 15 compliant | – | Yes | – | – |
| CE marked | Yes | – | Yes | – |
| Warranty | 2 Years | 5 Years with Registration | 1 Year | 1 Year |
Data sources
Data for this product compiled from these sources:
Specifications last updated Oct 20, 2026.