Track relative methane response with MQ-4 after long preheating and calibration; use certified gas detectors for life-safety applications.
Engineering approach
Track relative methane response with MQ-4 after long preheating and calibration; use certified gas detectors for life-safety applications.
Implementation guidance
Provide the sensor heater with the specified 5 V supply, allow the manufacturer's preheat, establish R0 using a controlled reference, and treat module-comparator thresholds as local indicators rather than concentration measurements.
Scope and limitations
MQ-4 is cross-sensitive, slow, and affected by environment and aging. Install a certified gas alarm according to local code for any occupied building.
Choose the required components and verify their specifications in the Juthour Tech store.
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