Family Owned & Operated Since 1971• Bakersfield, CA
SKU: CO270
The Extech CO270 air quality meter delivers precise CO₂, humidity, dewpoint, and temperature readings—all powered by just three × AAA batteries for up to a year. With a large, easy-to-read display, graphical air quality indicators, and anti-theft features, it’s perfect for manufacturing sites, warehouses, schools, offices and healthcare facilities.
List price. Volume pricing available.
The Extech CO270 air quality meter delivers precise CO₂, humidity, dewpoint, and temperature readings—all powered by just three × AAA batteries for up to a year. With a large, easy-to-read display, graphical air quality indicators, and anti-theft features, it’s perfect for manufacturing sites, warehouses, schools, offices and healthcare facilities.
The Extech CO270 Indoor Air Quality Meter with Temp, Humidity, Dew Point and CO2 Levels # CO270 is manufactured by Extech. Valley Instrument Service is an authorized Extech dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.
Our team can help with product selection, specs, pricing, and application support.
Contact Us or Call (661) 327-8681| Carbon Dioxide | 0 to 9999 ppm |
| Carbon Dioxide Basic Accuracy | ±50 ppm or ±3% of reading |
| Carbon Dioxide Max Resolution | 1 ppm |
| Relative Humidity | 5.0 to 95% |
| Relative Humidity Basic Accuracy | ±5% |
| Relative Humidity Max Resolution | 0.1% |
| Sensor Type | CO₂ NDIR (non-dispersive infrared) technology |
| Temperature (Air) | 0°C to 50°C (32°F to 122°F) |
| Temperature (Air) Basic Accuracy | ±0.6°C (±1°F) |
| Temperature (Air) Max Resolution | 0.1°C/°F |
| IP Rating | IP30 |
The Extech 42280A is designed to continuously monitor temperature and humidity so you can maintain ideal storage conditions in laboratories and cleanrooms while ensuring comfort in hospitals and other indoor working facilities. This datalogger with max/min mode records up to 24,000 data sets including date and time stamp and features both audible and visible alarms. You can generate PDF reports that show trending graphs, or export data to a Microsoft Excel spreadsheet, making it easy to identify irregularities in temperamental environments.
The Extech 44550 is a pen style humidity and temperature meter. It features a dual LCD for simultaneous display of relative humidity and temperature (°C/°F switchable). This temperature pen measures humidity from 20% RH to 90% RH ± 5% RH and temperature from -10°C to 50°C ± 1°C (14°F to 122°F ± 2°F). It is pocket sized for quick and reliable measurements at any location. The max/min memory functions for display of highest and lowest readings for both measurements. Complete with pocket clip and one LR44 button battery.
Take this this handy humidity and temperature gauge on the go and rely on a long-lasting 3V lithium battery for maximum usage time. The slim Extech 445580 humidity/temperature pen will capture humidity readings from 10 to 90% RH and register temperatures from -10°C to 50°C (14°F to 122°F). This utility tool is ideal for field work, storing maximum and minimum readings until the memory is cleared and includes a data-hold button for rapidly fluctuating measurements. The meter comes complete with a pocket clip and 3V lithium battery.
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