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The DROP D3 is fully waterproof (IP67 rated) and even floats, making it perfect for outdoor weather stations, marine environments, agricultural monitoring, and any location where moisture or rain is present.\u003c\/p\u003e\n\u003ch5\u003eWhat is the measurement range and accuracy?\u003c\/h5\u003e\n\u003cp\u003eTemperature: -22°F to 140°F (-30°C to 60°C), ±0.9°F (±0.5°C)\u003cbr\u003eRelative Humidity: 0% to 100% RH, ±2% RH\u003cbr\u003eBarometric Pressure: 700 to 1100 hPa (mbar), ±1.5 hPa\u003cbr\u003eAll sensors are factory calibrated to NIST-traceable standards.\u003c\/p\u003e\n\u003ch5\u003eHow long does the battery last?\u003c\/h5\u003e\n\u003cp\u003eThe DROP D3 runs on a standard CR2032 coin cell battery that typically lasts 2+ years with normal use. Battery life depends on logging interval and Bluetooth connection frequency. 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