Testo 417 Vane Anemometer - 4inch w/ App Connectivity

testo 417 Anemometer Handheld – CFM Meter HVAC 32 to +122 °F – 4-inch Air Flow Meter for Air Velocity, Volume Flow, and Temperature at Air Inlets and Outlets with App Compatibility

Testo 605i | Thermohygrometer for Indoor Temperature and Humidity Measurement | with Bluetooth Support

testo 405i – Anemometer handheld for air velocity, in-duct airflow, and temperature – CFM meter with Bluetooth and App operation