The Testo 05634409 Bluetooth & delta P Airflow Combo Kit 1 is used to handle all measurements in ventilation ducts and at air/ceiling outlets.

The 440 dP Multifunction Measuring Instrument, vane probe and hot wire probe head are all easy to use, offer maximum convenience for adjusting air-conditioning and ventilation systems, and feature an intelligent calibration concept for virtually no down time.

In addition, the 440 dP includes an integrated differential pressure sensor, which enables measurements at filters as well as Pitot tube and K-factor measurements.

The 0563 4409 Bluetooth & delta P Airflow Combo Kit 1 includes the Testo 440 dP Air Velocity and IAQ Meter with Differential Pressure Sensor, which combines all the benefits of a compact handheld device with intuitive measurement menus and a comprehensive selection of air velocity and IAQ probes.

This means you have all measuring tasks on air conditioning and ventilation systems reliably under control. You can connect the testo 440 to a large selection of digital probes, testo Smart Probes, or even many testo temperature probes, allowing for numerous configurations to meet your needs.