• CO2, Humidity And Temperature Sensors
• Dual Wavelength NDIR CO2 Sensor (Non-Dispersive Infrared) For Superior Stability
• User Operated CO2 Calibration
• Data Hold & Max/Min/STEL/TWA Function
• Adjustable Auto Power Off Timer
• Internal CO2 Alarm Buzzer
• Datalogging Up To 32,000 Sets
• USB Interface, PC Software Included
• Backlight Display Function 

SPECIFICATIONS