Nielsen-Kellerman, Inc. is the parent company of multiple brands, all focused on one mission – building precision, rugged, reliable electronics that give passionate people the knowledge they need to excel, understand their environment, get their job done right, and be safe. Please visit our affiliate pages to learn more! • Kestrel Weather Instruments are portable weather and environmental meters and loggers used by firefighters, military personnel, farmers, hikers, meteorologists, sports teams, and thousands of others. • Ambient Weather offers a broad range of affordable complete weather stations and add-on environmental sensors, all reporting to a beautiful online weather dashboard that seamlessly integrates weather station data with public forecasting data. • RainWise designs and builds professional-grade weather stations, solar monitoring stations, and rain gauges, including complete iOT weather stations that mount on a single mast and require no complex system integration for you to start seeing the WMO standards data in minutes. • Kestrel Ballistics offers rugged field ballistics calculators with onboard environmental for tactical, competitive, and recreational long-range shooting and hunting. • NK Sports Performance products are waterproof speed measurement, timing, and audio systems for competitive rowers and paddlers, used by virtually every school and club program worldwide, from novices to Olympic medal winners. • Blue Ocean Megaphones are the world's best portable PA devices - rugged, waterproof, loud, and rechargeable. NK’s headquarters are in Boothwyn, PA, just south of Philadelphia. We also have locations in Chandler, Arizona (Ambient) and Trenton, Maine (RainWise). We design and build most of our products here in the USA and emphasize working with US suppliers wherever possible. We truly live the meaning of that “Teamwork” rowing poster you see in every business!