MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module

Description

The MQ-2 Gas sensor detector module has a detection range of 300-10000 ppm. The gas sensor modules are always well known for their robust and simple construction and measures toxic gases in very low concentrations. The MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module is useful for gas leakage detection (home and industry). 

Hydrogen Gas Sensor Detector Module is suitable for detecting H2, LPG, CH4, CO, Alcohol, Smoke, or Propane. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by the potentiometer. This MQ-2 gas sensor's higher sensitivity to liquefied petroleum gas, propane, hydrogen, detection of gas, and other combustible vapors are ideal. This sensor can detect a variety of flammable gas, is a low-cost sensor for many applications.

MQ-2 gas sensor is using gas sensitive material is to be clean air in the lower conductivity of stannic Oxide or tin oxide (SnO2). When the sensor when flammable gases are present in the environment in which the conductivity of the sensor with an increasing concentration of combustible gas in the air increases.

• 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 )
• 0 ~ 5V analog output voltage, the higher the concentration the higher the voltage
• Use a simple circuit to convert the changes in conductivity and output signal that corresponds to the concentration of the gas.

Items System Characteristics	Parameter name	Min	Type	Max	Unit
VCC	Working Voltage	4.9	5	5.1	V
PH	Heating consumption	0.5	-	800	mW
RL	Load Resistance	-	can adjust	-	-
RH	Heater Resistance	-	33	-	Ω
Rs	Sensing Resistance	3	-	30	kΩ