JL3RH fits a connected diagnosis
The flexible probe and supported readings are reasons to compare it for air-condition measurements. Its connected range does not tell you where the probe should be placed or establish total airflow.
Choose the screen arrangement
An app probe can fit an existing kit, while a local-display instrument can reduce phone dependence. Both still need appropriate placement and current calibration and maintenance practices.
Avoid diagnosing from one number
Record conditions with other relevant measurements and the equipment requirements. A single temperature split, humidity percentage or derived wet-bulb reading is not a complete performance diagnosis.