5500FW Fire Weather Meter
The Kestrel 5500FW Fire Weather Meter measures wind speed and direction, temperature, humidity, barometric pressure, heat stress index, dewpoint, wet bulb temperature, density altitude, and wind chill. Accuracy of +/- 2%RH, Sensors 10 to 90% 25°C non-condensing, calibration drift is typically less than +/- 0.25% per year.