Arduino compatable MQ2 Gas Sensor Module - SR051

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Rs 120

SR051

New product

  • Input voltage : DC5V Power consumption ( current ): 150mA
  • DO output : TTL digital 0 and 1 ( 0.1 and 5V)
  • AO output :0.1-0 .3 V ( relative to pollution ) 
  • maximum concentration of voltage of about 4V

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Description :

MQ-2 gas sensor sensitive material used in the clean air low conductivity tin oxide (SnO2). When there is the environment in which the combustible gas sensor, conductivity sensor with increasing concentration of combustible gases in air increases. Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. MQ-2 gas sensor high on gas, propane, hydrogen sensitivity of detection of natural gas and other flammable vapors are also very good. This sensor can detect a variety of flammable gas, is a low-cost sensors for a variety of applications. 
  
 

Specification :

  • Using high-quality dual-panel design, with power indicator and TTL signal output instructions;
  • The switching signal having a DO (TTL) output and analog output AO ;
  • TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module )
  • Analog output voltage with a higher concentration of higher voltage.
  • A gas, natural gas, city gas, smoke better sensitivity.
  • There are four screw holes for easy positioning ;
  • Has a long life and reliable stability
  • Rapid response and recovery characteristic
  • Input voltage : DC5V Power consumption ( current ): 150mA
  • DO output : TTL digital 0 and 1 ( 0.1 and 5V)
  • AO output :0.1-0 .3 V ( relative to pollution ) 
  • maximum concentration of a voltage of about 4V

Special note: After the sensor is powered, needs to warm up around the 20S, measured data was stable, the heat sensor is a normal phenomenon, because of the internal heating wire, if hot is not normal.

  • VCC: positive power supply (5V)
  • GND: power supply is negative
  • DO: TTL switching signal output
  • AO: the analog signal output

Dimension :

Package included:

1 x mq-2 Gas Sensor      

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