Product Description
Size: 32mm X22mm X24mm length * width * height
- Second, the main chips: the LM393, the MQ-9 gas sensor
- Third, the working voltage: DC 3-5V
Fourth, the characteristics of:
1 has a signal output instructions;
2 the dual signal output (analog output, and TTL level output);
3 the effective signal of the TTL output is low, can be directly connected to the microcontroller;
4 Analog Output 0 ~ 5V, the higher the concentration the higher the voltage;
5 carbon monoxide, combustible gas, has good sensitivity;