The First Step to Optimizing Performance — Knowing the current environmental conditions can often be the difference between finishing in the money and just finishing. (read more)

The most comprehensive pocket weather meter on the market. For just under 4 ounces, you get every environmental reading with the press of a single button. The 4000 is unparalleled in its ease of use and totally customizable navigation and data display. In addition to measuring the current conditions, it tracks and stores up to 2000 sets of data. (read more)

Many Kestrel users need to know everything that the weather is doing, but don't need to log the data. We developed the Kestrel 3500 just for them. It provides comprehensive environmental data on nine different measurements with the simplicity of the Kestrel 1000. Simply turn it on and scroll left and right to see exactly what the environment is doing. (read more)

NK was the first to provide accurate relative humidity measurements from a hand-held weather meter, and the Kestrel 3000 features two patents on its humidity measuring sensors. A testament to the 3000's accuracy: it's become practically required equipment for wildland firefighters—users whose lives literally depend on the accurate weather data their Kestrel 3000 provides. (read more)

For those of you who like to know just how cold and windy it really is, the Kestrel 2000 Pocket Wind Meter is your reality check. Whether contemplating which wet suit the cold water warrants, or checking to see how low the wind chill can go in the blind, the Kestrel 2000 is the easy-to-use tool you need. (read more)

Combined Pressure, Humidity and Temperature in one transmitter; Vaisala PTU300

• analog output option (mA, V or relay)
• serial interface (RS232, RS485)
• NMEA for GPS interface

Ideal for monitoring laboratory environments where pressure, temperature and humidity parameters require strict tolerance. (read more)

The Kestrel 4100 Pocket Air Flow Meter was engineered specifically with the HVAC technician's many needs in mind. In addition to measuring volume air flow, this multi-functional precision instrument also measures temperature, relative humidity and dewpoint, either ambient or in any accessible airflow. (read more)

The Kestrel 4200 has made HVAC technicians jobs even easier with automatic wet bulb temperature and humidity ratio readings. Of particular interest to dehumidification professionals, the Kestrel 4200 measures relative humidity, dewpoint, wet bulb temperature and heat stress index as well as the humidity ratio. (read more)

For years customers have been asking for wind direction along with wind speed. New for 2007, the Kestrel 4500 does just that with its built in digital compass. But it doesn't stop there. It also calculates crosswind and headwind/tailwind with reference to a user-set target heading, and stores the information along with all the other environmental readings in its 1400 data point memory. (read more)

The Kestrel 2500 takes the great features of the Kestrel 2000 and adds in a pressure sensor. A three-hour pressure trend indicator helps you predict fish and wildlife activity and know when the weather's going to turn nasty. With its easy-to-use digital pressure altimeter, you have the perfect instrument for any outdoor activity. (read more)