EXTECH 45118 Mini Thermo-Anemometer (0.5 ~ 28m/s, no heat index)

Measurements Range Resolution Basic Accuracy
ft/min (feet per minute): 100 to 5500 ft/min / 20ft/min /± (3%rdg + 40ft/min)
m/s (meters per second): 0.5 to 28m/s /0.1m/s /± (3%rdg + 0.2m/s)
km/h (kilometers per hour: 1.8 to 100.6 km/h /0.7km/h /± (3%rdg + 1.4km/h)
MPH (Miles per hour): 1.1 to 62.5 MPH /0.2MPH /± (3%rdg + 0.4MPH)
knots (nautical miles per hour): 1.0 to 54.3 knots /0.3knots /± (3%rdg + 0.6knots)
Beaufort Force: 1 to 17 BF 1 BF ± 1
Temperature: 0 to 122°F (-18 to 50°C) /0.1°F/°C /±1.8°F/±1°C
Power CR2032 Lithium battery
Dimensions 5.25 x 2.75 x 0.75" (133 x 70 x 19mm)
Vane 1"(24mm) diameter
Weight 3oz (95g)