Smart Home Control and Management Based on Big Data Analysis

Table 1

MQ2 detection range.

Name of detected substance	Detection concentration range
Liquefied gas and propane	100 ppm∼10000 ppm
Butane	300 ppm∼5000 ppm
Methane	5000 ppm∼20000 ppm
Hydrogen	300 ppm∼5000 ppm
Alcohol	100 ppm∼2000 ppm