The Testo 510i Differential Pressure Guage is suitable for quick and easy measurements of gas flow and static pressures when used in conjunction with a smartphone or tablet.
The Smart Probe App makes taking and viewing your readings easy. You can view and export the data in different formats and send it out via email directly from within the app.
Features:
Quick and easy measurements.
Magnetic Holder or easy attachment
Use your Smartphone or Tablet as the display.
Can be used for flow measurement and volume flow measurement.
The Smart Probe App allows reliable timed and multi-point calculations.
Measurement data can be displayed as a chart or in a table.
Measurement data can be exported as a PDF or Excel file.
Included in the box:
Differential Pressure Measuring Instrument
Hose set with adapter
Batteries
Calibration Protocol
Technical Requirements:
Requires iOS 11.0 or newer.
Requires Android 6.0 or newer; 
Requires mobile end device with Bluetooth 4.0