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Free shipping! Keyestudio MQ-5 LPG Gas City gas sensor module for arduino

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Ks0043 MQ-5Ks0043 (4)Ks0043 (7)Ks0043 (8)Ks0043 (1)

The gas sensitive material used in MQ-5 gas sensor is SnO2, which is of lower electrical conductivity in clean air. When there is combustible gas in the environment where sensor resides, the electrical conductivity of the sensor increases with the increase of the combustible gas concentration in the air. The change of electrical conductivity can be converted to the output signal corresponding to that of the gas concentration by using a simple circuit. 
It has high sensitivity to propane, methane, liquefied gas, natural gas and city gas, almost no response to ethanol or smoke, which makes it excellent in anti-alcohol and anti- smoke interference.
  • Heating voltage (VH): AC or DC 5±0.5V
  • Loop voltage (VC): up to 24V DC
  • Load resistance (RL) : 2KΩ
  • Resistance in clean air (Ra): ≤4000KΩ
  • Sensitivity (S=Ra/Rdg): ≥4(in 1000ppmC4H10)
  • Response time (tres) : ≤ 10S
  • Recovery time (TREC): ≤ 30S
  • Detection range: 50-10000ppm
Sample code:
Reads an analog input on pin 0, prints the result to the serial
This example code is in the public domain.
void setup() {
void loop() {
int sensorValue = analogRead(A0);
Serial.println(sensorValue, DEC);


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