Key Features
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4-in-1 sensor: Temperature, Humidity, Pressure, and Gas 
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Dual interface support: I²C (up to 3.4 MHz) & SPI (up to 10 MHz) 
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Extremely low power consumption, ideal for battery-powered applications 
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Sensors can be individually enabled/disabled to optimize power use 
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Compatible with both 3.3V and 5V logic systems 
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Compact size with high accuracy and fast response time 
Technical Specifications
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Interface: - 
I²C (3.4 MHz max) 
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SPI (3-/4-wire, 10 MHz max) 
 
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Voltage Requirements: - 
VDD: 1.71 V – 3.6 V 
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VDDIO: 1.2 V – 3.6 V 
 
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Current Consumption: - 
2.1 μA (humidity + temperature @1Hz) 
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3.1 μA (pressure + temperature @1Hz) 
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3.7 μA (humidity + pressure + temperature @1Hz) 
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0.09 – 12 mA (full sensor use incl. gas sensing, depending on mode) 
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0.15 μA (sleep mode) 
 
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Operating Conditions: - 
Temperature: -40°C to +85°C 
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Humidity: 0–100% RH 
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Pressure: 300–1100 hPa 
 
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Physical Characteristics: - 
Module Size: 16.3 mm × 18.7 mm 
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Weight: 1.3 g 
 
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Applications
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Indoor air quality monitoring 
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Smart home and HVAC systems 
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IoT-based environmental sensing 
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Weather stations and forecasting units 
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Enhanced GPS performance (e.g., altitude detection) 
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Indoor navigation (floor change detection) 
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Wearable fitness trackers and environmental monitors 
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Vertical speed indication for drones, vehicles, or climbing aids