Analog Gas Sensor (MQ2)

DFRobotSKU: RB-Dfr-200
Manufacturer #: SEN0127

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Sale price ¥1,186

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Description

  • Simple to use gas sensor
  • Suitable for detecting LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke
  • Used in gas leakage equipment in consumer and industial market
  • High sensitivity and fast response time
  • Sensitivity can be adjusted by the potentiometer
  • Size: 40 x 20 mm

PDF File

  • Fast response and High sensitivity
  • Interface Type: Analog
  • Pin Definition: 1-Output 2-GND 3-VCC
  • Stable and long life

Customer Reviews

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P
Paul
docs are inconsistent

I purchased several MQ sensors, originally sourced from DFrobot. The pin connections shown on this RobotShop page (1=output, 2=gnd, 3=Vcc) are wrong, It should read (1=output, 2=Vcc, 3=Gnd). The DFRobot site is also mixed up, , This page https://www.dfrobot.com/wiki/index.php/Analog_Gas_Sensor(MQ2)_(SKU:SEN0127) writes it wrong twice, but the picture is right. This page https://www.dfrobot.com/wiki/index.php/Analog_Gas_Sensor_SKU:SEN0127 removed the incorrect text, and the picture is right. I think pin 2 should be Vcc because their 'Gravity' connector convention has it this way, AND the wire colour on the provided leads is red. Not much to go on.

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