Easy Air Flow CalculationSimply input duct area ( or ft²) and let the anemometer automatically calculate air flow volume in CFM or CMM essential for HVAC professionals and technicians.
Portable & Long-LastingCompact, lightweight design with extendable probe for hard-to-reach areas. Powered by 3 AA batteries (included) or USB adapter with auto-shutdown to conserve power. Includes low battery indicator.