The Kestrel Drop D3 is a versatile and robust environmental data logger designed to provide precise measurements in various conditions. Ideal for industries such as transportation, agriculture, and firefighting, this device ensures you can monitor environmental data even when you're not physically present. With its compact design and made-in-the-USA quality, the Kestrel Drop D3 is perfect for tracking conditions in cargo, military training fields, or even your home or office. Key Features from the user's perspective Built to withstand tough conditions with waterproof and drop-tested durability Offers real-time wireless monitoring and graphing of environmental data Compatible with iOS and Android devices via Bluetooth Low Energy Long-lasting battery life ranging from 6 months to 1 year based on usage No need for humidity calibration over time Available in high-visibility red, blue, and desert tan colors Technical Features Temperature: -10 °C to 55 °C (14 °F to 131 °F) Humidity: 10% to 9