Grove – Gas Sensor (MQ2, MQ3, MQ5, MQ9)

This is the Grove – Gas Sensor range from SeeedStudio. You have the option of either MQ2, MQ3 or MQ5 sensors in this range – a comparison table is shown below. These sensors detect gas leakage and they cover the detection of LPG, i-butane, methane, alcohol, hydrogen, smoke and more. Across all of these sensors, measurements are taken extremely quickly due to the rapid response time of these devices. The sensitivity of these sensors can be adjusted by the potentiomater. 

 

Symbol	MQ-2	MQ-3	MQ-5	MQ-9
Gas Detected	Combustible Gas、Smoke	Alcohol Vapor	LPG, Natural Gas, Town Gas	Carbon Monoxide, Coal Gas, Liquefied Gas
Detect Concentration	300-10000ppm	0.04-4mg/L Alcohol	300-10000ppm	10-1000ppmCO;100-10000PPm Gas

• High sensitivity to a wide range of combustible gases
• Stable performance, long life and low cost
• Fast response
• Wide detection range
• Simple drive circuit