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1Pc MQ-135 Air Quality Sensor Hazardous Gas Detection Module for Arduino, Indoor Air Quality Meters Module industrial_Aug2024_update Dental Mirror Stainless Steel with1Pc MQ 135 Air Quality Sensor Hazardous Gas Detection Module for Arduino, Indoor Air Quality Meters Module Product Features Versatile Sensor: MQ 135 Air Quality Sensor Module for detecting hazardous gases and air quality monitoring. Wide Detection Range: Capable of detecting NH3, NOx, alcohol, Benzene, smoke, CO2, and other harmful gases. Easy Integration: Designed for seamless integration with Arduino and other microcontroller platforms. Compact