Measurement:
Air velocity:  m/s (meters per second) ,km/h (kilometers per hour), ft/min (feet per minute)
knots (nautical miles per hour), mile/h (miles per hour) , Air flow: CMM (m3/min.), CFM (ft3/min.)
Air temperature: °C, °F , Data hold

Sensor structure: Air velocity  & air flow: conventional twisted van arm and low friction ball bearing
design , Temperature: thermistor