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Dual signal output (analog output, and TTL level output);
TTL output valid signal is low, can be connected directly to the microcontroller
0 ~ 5V analog output voltage, the higher the concentration the higher the voltage
The gas, natural gas, city gas, smoke better sensitivity.
Has a high sensitivity and good selectivity to ethanol vapor;
Has a long life and reliable stability;
Rapid response recovery characteristics
Size: 32mm X22mm X22mm length * width * height
The main chip: LM393, MQ-3 gas sensor
Operating voltage: DC3-5V