Description
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The MQ135 sensor detects a wide range of gases including CO₂, ammonia, benzene, and smoke. It is widely used in air quality monitoring applications and IoT projects.
Specifications:
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Operating Voltage: 5V DC
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Detection Range: 10–1000 ppm
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Output: Analog (AO), Digital (DO)
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Preheat Time: 24 hours recommended for calibration
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High sensitivity to NH3, NOx, alcohol, benzene, smoke, CO₂
Features:
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Wide detection range
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Low cost and reliable
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Analog and digital outputs
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Long lifespan with stable output
Applications:
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Air quality monitoring stations
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Indoor air pollution detection
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IoT environmental sensors
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Smart city projects
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