MQ-7 MQ7 CO Carbon Monoxide Gas Sensor Module




การใช้งาน MQ7 คลิกที่ลิงค์นี้ได้เลย

MQ-7 MQ7 CO Carbon Monoxide Gas Sensor Module

  • Main chip: LM393, MQ-7 gas sensor.
  • Operating voltage: DC 3-5V.
  • With the signal output indication.
  • The dual signal output (analog output, and TTL level output).
  • TTL output valid signal is low level, can connected to microcontroller directly.
  • 0 ~ 5V analog output voltage, the higher concentration the higher voltage.
  • With high sensitivity and good selectivity for CO.
  • With a long service life and reliable stability.
  • Rapid response and recovery characteristics.
  • Size: 33mm*20mm*16mm(L * W * H)


MQ-7 Sensor Specifications:

  • Detecting Range: 10 to 1000ppm
  • Sensitivity: R in air/R in typical gas≥5
  • Response Time:≤150s(70% Response)
  • Recovery Time:≤150s(70% Response)
  • Heating Resistance:31Ω±3Ω
  • Heating Vlotage:5.0V±0.2V/1.5V±0.1V
  • Heating Power: about 350mW
  • Measuring Voltage:≤24V

Operating Condition:

  • Ambient Temperature:-20℃~+55℃
  • Humidity: ≤95%RH
  • Environment oxygen content: 21%
  • Storage Condition:
  • Temperature: -20℃ to +70℃
  • Humidity: ≤70%RH



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