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The Kestrel 4400 Heat Stress Tracker detects when conditions are not safe, even before your body does.

• Wet Bulb Globe Temperature
• Thermal Work Limit
• Naturally Aspirated Wet Bulb Temperature
• Globe Temperature

• Barometric pressure
• Pressure trend
• Altitude
• Relative humidity
• Heat stress index
• Dewpoint
• Wet bulb temperature
• Density altitude
• Wind chill
• Air, water, and snow temperature
• Current wind speed
• Average wind speed
• Maximum wind gust

Available with Bluetooth® (Select option below):

Kestrel 4400 Heat Stress Trackers with integrated Bluetooth® technology offer the ultimate in portable and accurate environmental data. Now, both real-time and logged data can be transferred wirelessly and automatically to a laptop or PDA, making a Kestrel 4400 the perfect tool for virtually any job that requires quick and reliable heat stress data.

Kestrel Pocket Weather Meters have specifically customized our Bluetooth® integration to answer the unique needs of our customers:

• Streamline your work and reduce your equipment in the field - wireless data transmission eliminates the need for a separate interface and cabling.
• Every Bluetooth® Kestrel will include custom communication software designed to quickly and easily configure your data transmission frequency, download logged data, graph data, and transfer data to other applications.
• Data transmission range adjustment allows you to maximize power to communicate with your Kestrel at up to a 30 feet range, or reduce power for closer, more secure operation.
• Individual unit ID’s ensure you pair with the Kestrel you want, even when more than one system is operating in the same area.
• Permanently coded unique 4-digit Pin numbers provide extra security when pairing and transmitting data.

Tune-up & Calibration services available here!