MQ-2 Gas Sensor Module

             MQ-2 Gas Sensor Module used in the clean air low conductivity tin oxide (SnO2). When there is the environment in which the combustible gas sensor, onductivity 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.

* Characteristics Can be used For home or factory gas leakage monitoring device and gas, butane, propane, methane, alcohol, hydrogen and other monitoring devices.

* The relay in this circuit can also control the equipment outside the machine, such as 
the alarm or the exhaust fan.

* Electric power debugging circuit:When debugging, it should be energized first. When the 6V is connected to the DC RP1, the buzzer always calls, adjusting the RP1 potentiometer in a clockwise way, so that the buzzer doesn't call it: after waiting for 3 minutes, the sensor sends out a little heat. The lighter gas is sprayed onto the gas sensor, generating excitation buzzer buzzing, with lighter when the song continues, there is still a long lingering; spray several times later or so, explained the success of the

Size: 50*41*12mm
Operation Voltage: DC 5V(or 6V)
Weight: 35g