Description
Hazardous Gas Detection Module.
Specification:
The Main Chip: MQ135 gas sensing probe
Operating Voltage: DC 5 V
Power (Current) : 150mA
DO Output: 0.1V/5V
AO Output: 0.1-0.3V
Signal output indicator instructions
Dual signal output (analog output, and TTL level output)
TTL output valid signal is low; (output low signal light, which can be accessed microcontroller IO port)
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