SDMN6 adds a specific testing role
Compare it when its pressure-switch testing functions are part of trained recurring work. If the requirement is only static or differential pressure, a simpler instrument may be a better purchase.
Local and connected arrangements differ
A paired connected kit can support remote readings. A local dual-port instrument keeps the result at the tool. Consider placement and documentation before choosing the viewing method.
Pressure needs context
Keep the test location, mode and appliance or duct requirements with the reading. Neither a pressure result nor an app calculation independently establishes safe combustion or total delivered airflow.