... *Sensor: ----Air velocity sensor: Plastic impeller, magnetic induction ----Temperature sensor: NTC thermometer *Low battery indication: Yes *Auto power shut off: 14 ... : CR2032 3.0V Parameters: Measurement items: Air velocity, Air temperature *Measurement range: ----Air velocity: 0~30m/s, 0~90km ... h, 0~5860ft/min, 0~55knots, 0~65mph (± 5%) ----Air temperature: -10~45º C, 14~113º F (± 2º C) *Resolution ...