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Hydrogen Gas Sensor Module MQ-8

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This sensor module has an MQ-8 as the sensor component and has a protection resistor and an adjustable resistor on-board. The MQ-8 gas sensor is highly sensitive hydrogen and less sensitive to alcohol, and cooking fume. It could be used in gas leakage detection appliance in family and industry. The resistance of the sensor component changes as the concentration of the target gas changes.


  1. High quality double panel design, with power supply indicators and TTL signal output
  2. Main chip: the LM393, MQ-8 gas sensor
  3. Input Voltage: DC5V
  4. Current: 150mA
  5. DO Output: TTL 0 and1 (0.1 and 5V)
  6. AO Output: 0.1 - 0.3V
  7. Crystals: 11.0592 MHZ
  8. Baud Rate: 9600
  9. TTL output and AO analog signal output
  10. Four screw holes to facilitate positioning
  11. Stability of long service life and reliab


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