Anemometer, Rotating Vane Sensing Method, Data Logging No, Humidity Sensing No, Velocity (Knots) 0 to 55, Air Velocity Accuracy +/-0.05 Percent, Case Color Gray, Temp. Range 14 Degrees to 113 Degrees F, Data Hold Yes, Auto Power Off Yes, Includes Handheld Features Item: Anemometer Sensing Method: Rotating Vane Air Velocity Accuracy: +/-0.05% Data Logging: No Humidity Sensing: No Vane Material: Plastic Power Source: Battery Battery Life: 100 hr Data Hold: Yes Temp. Range: 14 Degrees to 113 Degrees F Velocity (Knots): 0 to 55 knots Auto Power Off: Yes Display: LCD Includes: Handheld Case Color: Gray Manufacturers Warranty Length: 1 yr