With the testo 440 dP climate measuring instrument, you can measure and save all climate-relevant parameters in combination with the high-quality, digital probes (please order probes separately). Up to 3 probes can be connected at the same time: a Bluetooth probe, a wired probe and a temperature sensor with thermocouple type K connection. Automatic probe recognition and clearly structured measurement menus ensure extremely easy operation and make your everyday work easier. A differential pressure sensor is already integrated in the testo 440 dP. This enables measurements on filters and fans as well as Pitot tube and k-factor measurements (please order Pitot tube separately. Scope of delivery: testo 440 dP climate measuring instrument incl. integrated differential pressure sensor, connection hose, 3 x AA batteries, USB cable and calibration protocol.Meer tonenMinder tonen