MQ9 Gas Sensor Module Carbon Monoxide flammable Gas Sensing

You have to know what gases are in your cylinders. This one can detect LP gases, methen and carbon monoxide. Gas cylinders which are normally used for cooking contain LP gas. Answered by A.R, 28-Sep-2014 09:37 AM

Model is same of course. This one is MQ-9 so is the one you received. With four pins and an on board potentiometer. In our current lost just the colour of the outer lining of the MQ-9 sensor is grey instead of silver as shown in the picture. As it is mentioned in terms and conditions, products may not exactly look like the picture as our lots continuously changes. But it does not mean that we give wrong model or do not sell what we show. Answered by A.R, 30-Sep-2014 10:17 AM

i think this one has more surface area exposed to outside air than the one with plastic side-cover. But whatever,that's okay! Thanks. Answered by Rakib.Ctg, 01-Oct-2014 00:03 AM

MQ-3 is used for (Alcohol, Ethanol, smoke) detection. MQ-8 used for (Hydrogen Gas) detection. MQ-9 is used for (Carbon Monoxide, and flammable gasses) detection. Answered by almamun3248, 09-Mar-2023 17:58 PM