BENETECH GM8902+ LCD Display Digital Digital Anemometer Air Flow Wind Speed Scale Meter

Features1. Measurement of wind velocity, temperature and flow 2. Unit conversion of wind velocity,temperature and flow 3. Measurement of MAX and MIN wind velocity 4. Measurement of 2/3V max and average wind flow 5. Data holding,storing and deleting function 6. Low battery indicating function 7. Auto power off function (power off autocratically if no further operation for 10 minutes) 8. Large LCD display, backlight 9. Retractable drag rodSpecification1. Measuring Range: - Air Velocity: 0-45m/s, 0-140km/hr, 0-8800Ft/min, 0-88 knots, 0-100mph(accuracy +/-3%) - Air Temperature: 0 degree C~+45 degree C, 32 degree F-113 degree F(Accuracy+/-2 degree C) 2. Resolution: 1 degree C, 0.1m/s 3. Units of velocity: m/s.ft/min, knots, km/hr, mph 4. Power supply: 4 x 1.5V AAA battery (not included)