IB911-Carbon Monoxide Monitor with Temperature & Humidity 

• Measures carbon monoxide (CO), air temperature and relative humidity
• Features a large LCD display, built-in clock and calendar, max hold function and user-adjustable alarm limit
• Can be mounted on a wall or placed on desktop
• Manual CO calibration to zero
• Low battery indicator
• Includes: Desktop Carbon Monoxide (CO) monitor with temperature & humidity, Batteries

Specifications

• Measuring Range: 0 - 999 ppm
• CO Accuracy: 10 ppm ±

Additional Specifications

• Power Supply: 4 AAA Batteries, AC Adaptor (Optional)
• Product Certifications: CE
• Operating Humidity: 0 to 90% (non-condensation)