Features:

1.With signal output indicator light

2.Size: 32mm X22mm X30mm length * width * height

3.The main chip: LM393, MQ-x gas sensing probe

4.Working voltage: DC 5V

5.The dual signal output (analog output and TTL output)

6.The analog output and increased with the increase of concentration,the higher the concentration higher voltage

Package Included:

MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 each 1Pc