Extech CO270 Battery-Operated Air Quality CO₂ Meter

Extech CO270 Battery-Operated Air Quality CO₂ Meter

The Extech CO270 Battery-Operated Air Quality CO₂ Meter is a battery-operated indoor air quality meter that monitors carbon dioxide (CO₂) levels along with temperature, humidity, and dew point. This helps maintain a safe and healthy environment in enclosed spaces like classrooms, offices, and meeting rooms, providing a complete picture of indoor air conditions.

The CO270 runs on 3 × AAA (1.5 V) batteries, offering a typical battery life of up to six months in regular mode or one year in ECO mode. It comes with safety features like a programmable buzzer alarm and visual air quality indicators, which allow users to respond quickly when CO₂ thresholds are exceeded. It also includes anti-theft mounting hardware and an anti-modification feature for added security and reliability. A manual CO₂ calibration function is available to ensure continued measurement accuracy.

Built with a highly accurate NDIR CO₂ sensor, the CO270 delivers reliable measurements up to 9999 ppm with a basic accuracy of ±50 ppm or ±3% of reading. Users are able to recall peak and average readings from the last 24 hours, providing insight into daily air quality trends. With an IP30 rating and a 2-year warranty, the CO270 stands out as the only battery-operated CO₂ meter in Extech’s portfolio.

part number: CO270

Key Features

• Typical battery life 6 months or 1 year in ECO mode
• Recall peak and average value over the last 24-hour period
• Includes anti-theft and anti-modification features
• Programmable buzzer features to alert when set threshold is exceeded
• CO2 manual calibration feature