MQ216 Alkane Flammable Gas Sensor Module


The MQ216 gas sensor belongs to the MQ gas sensing module series. The MQ series is well known for its innate ability to effectively and timely report harmful concentrations of dangerous gasses. MQ216 is an alkane/flammable gas sensor used to detect and identify harmful concentrations of LPG (liquid petroleum gas), iso-butane, propane, methane, alcohol, and dense smoke in the immediate vicinity. MQ216 sensor features a wide array of design capabilities such as ESD protection and overvoltage protection. The sensor can easily be interfaced with any MCU (Arduino, Raspberry-pi, etc.) for analog data extraction.

MQ216 gas sensor has a high sensitivity to hydrogen gas and a fast trigger response time. The sensor’s output is analog resistance corresponding to the concentration of hydrogen gas in the vicinity. The drive circuit is very simple; all that is required to do is to power up the heater coil with 5V, add a load resistance, and connect the output to an ADC.

MQ216 Alkane Flammable Gas Sensor Module

MQ216 Gas Sensor Key Features

  • High Sensitivity to LPG, iso-butane, propane
  • Small sensitivity to alcohol, smoke
  • Detection Range: 100 – 10,000 ppm iso-butane propane
  • Fast Response Time: <10 seconds
  • Simple drive circuit
  • Heater Voltage: 5.0V
  • Standard Encapsulation: Bakelite
  • Comes with power and digital signal LED indicator
  • 2-way signal output (analog output, and TTL-level output)
  • Dimensions: 18mm Diameter, 17mm High; excluding pins, Pins – 6mm high
  • Fast response characteristics
  • With mounting holes for easy permanent installation
  • Main chip: LM393 Voltage comparator

MQ216 Gas Sensor Pinout

MQ216 Pinout
Pin NamePin No.Description
VCC1This pin powers the module, typically the operating voltage is +5V
GND2Used to connect the module to the system ground
DO3You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer
AO4This pin outputs 0-5V analog voltage based on the intensity of the gas.


  • Circuit voltage: 6V±0.1 DC/AC
  • Load resistance: 50Ω
  • Heating consumption: less than 100mW
  • Using Temperature: 0℃ – 50℃
  • Storage Temperature: 0℃ – 70℃
  • Related humidity: less than 95%Rh
  • Oxygen concentration: 21%(standard condition) O2 concentration can affect sensitivity
  • Sensing Resistance: 30Ω-200Ω (1000ppm isobutane )
  • Concentration Slope rate: ≤0.6
  • Standard Detecting Condition: Temp: 20℃ ± 2℃ Vc: 6V ± 0.1, Humidity: 65% ± 5%, RL= 50Ω


  • Alkane/Flammable gas leakage alarms for home, work, and industrial environments.


You can download the datasheet for MQ216 Alkane/Flammable Gas Sensor Module by clicking the link given below:

See Also: SIM900A Dual Band GSM/GPRS Module | DS3231 Precision I2C Real-Time Clock Module | MT8870D Integrated ISO2-CMOS DTMF Receiver Module