The AN320 is a Large Vane CFM/CMM Anemometer/Psychrometer plus CO₂. This meter measures Air Velocity, Air Flow, Relative Humidity, Wet Bulb, Dew Point and Carbon Dioxide. Extech?s Large Vane Thermo-Anemometer series allows for more precise readings on larger size ducts. Min/Max, Data Hold, and Auto power off functions. Complete with 4 AAA batteries and hard carrying case.

• 4″ (10cm) vane allows for more precise readings on larger size ducts
• Air Velocity, Air Flow, Relative Humidity, Wet Bulb and Dew Point, Carbon Dioxide (CO?)
• Built-in thermistor for air temperature
• Multipoint and timed average calculations
• Min/Max, Data Hold, and Auto power off
• Complete with four AAA batteries and hard carrying case