Gas Sensor(MQ3) module is useful for gas leakage detection (in home and industry). It is suitable for detecting Alcohol, Benzine, CH4, Hexane, LPG, CO. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by using the potentiometer.
Note that The sensor value only reflects the approximated trend of gas concentration in a permissible error range, it DOES NOT represent the exact gas concentration. The detection of certain components in the air usually requires a more precise and costly instrument, which cannot be done with a single gas sensor. If your project is aimed at obtaining the gas concentration at a very precise level, then we do not recommend this gas sensor.
Specification:
Power Supply: 5 Volts
Interface Type: Analog & Digital
Working temperature: 20 degree ±2 degree
High Sensitivity to Alcohol & small sensitivity to Benzine.
Low Cost.
Stable & Long Life.
On board Power indication.
Detectable Concentration: 0.04-4mg/L
Application: For motor vehicle drivers and other non-drinking workers on-site inspection, but also for other places of ethanol vapor detection, detection of alcohol range.
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