Specification *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: 0.2º C, 0.2m/s Features *Display: LCD *Sensor: ----Air velocity sensor: Plastic impeller, magnetic induction ----Temperature sensor: NTC thermometer *Low battery indication: Yes *Auto power shut off: 14 minutes without any operation *Backlight: 12 seconds active by press any key *MAX/MIN/AVG reading Package *Packing: Blister+Card *Power: CR2032 3.0V *Dimension: 105*40*15mm*Net weight: 52g (including battery)