eBay

MQ-7 CO Gas Sensor Module CO Gas Detector DC3-5V Built in LM393
Description
  • 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: 36mm*24mm*17mm(L * W * H)
  • Application:
    For CO gas detect, CO detection range: 10 ~ 1000ppm.

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
Package include:
  • 1 x MQ-7 Sensor Module
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