The EF-x2000-T (EB-Flow II) (Series 2000) is EBTRON’s top-of-the-line airflow/temperature measurement solution with alarm capability for round ducts between 4 and 16 inches in diameter. It is ideal for most small duct airflow measurement and volumetric airflow tracking applications, and more features than the EF-x1000-T make it the best choice.