 

Feature:
Size: 32mm * 22mm * 27mm
Main chip: LM393, MQ-9 gas sensors 
Working voltage: DC 5 V
Characteristics: 
1, having a signal output instruction. 
2, dual signal output (analog output, and TTL level output) 
3, TTL output valid signal is low. (Low-level signal when the output light can be directly connected to the microcontroller) 
4, 0 - 5V analog output voltage, the higher the concentration the higher the voltage. 
5, for CO, gas, liquefied petroleum gas with high sensitivity and good selectivity. 
6, has a long life and reliable stability 
7, rapid response and recovery characteristics
Application: 
MQ-9 sensor main family, environmental detection of carbon monoxide gas for CO, gas, liquefied petroleum gas field testing; 

 