MQ2 Gas Sensor Module

• infor can be found here and here
• With the signal output instructions.
• Dual output (analog output, and TTL-level output)
• TTL output valid signal is low. (Low signal when the output light can be directly connected to the microcontroller)
• Analog Output 0 ~ 5V voltage, the higher the concentration the higher the voltage.
• Of liquefied petroleum gas, natural gas, city gas have better sensitivity.
• Long-term stability and reliable service life
• Fast response characteristics