The most user-friendly WetBulb Globe Temperature (WBGT) meter on the market detects when heat-related conditions are unsafe well before your body does. With this handheld, portable, measurement tool and environmental data logger, theres no need for distilled water or bulky globes. Getting accurate measurements couldnt be easier: just hold the Heat Stress Tracker in the area of interest for instantaneous and average WBGT measurements. Set the appropriate WBGT thresholds for flag warnings and the loud buzzer. Bright LED beacon and on-screen warnings provide instant notification of dangerous conditions. 5-year warranty.Full-featured weather meterMeasures wind speed, maximum wind gusts, temperature, humidity, pressure, wind chill, density altitude, and more. LiNK wireless data communicationAdds a compass for tracking wind direction, expanding its usability to include HAZMAT response. Measures headwind at the running track.Tracks and logs over 10,000 sets of time-stamped dataData log can be transferred to a mobile device wirelessly with the LiNK wireless communication option and Kestrel LiNK app, or to a PC/Mac with either the accessory Kestrel LiNK dongle or waterproof USB data transfer cable (available separately).Vane mountAllows hands-free measurements.