Hello, new Arduino user here. Having fun so far but I have a question about a sensor called the "MQ2". It is a gas sensor but it is also advertised as a Smoke sensor. Would this mean I could use it as a smoke detector to detect cigarette smoke? I run a small 12 room motel in Michigan where state la…

MQ2 gas/smoke sensor

system August 4, 2011, 11:56pm 3

I don't know if taping the vents also disables smoke detectors, but monitoring batteries wouldn't fix that.

Also, adding circuitry to the smoke detector might be frowned upon by an inspector.

Topic		Replies	Views
Smoke Detector Project Guidance	5	1038	May 5, 2021
My MQ2 Sensor cannot detect smoke but normal for Gas Sensors	8	598	March 4, 2023
Stable MQ2 readings even though no gas present...hardware or software flaw? Sensors	8	4100	May 6, 2021
MQ2 smoke sensor - Is the interface board necessary Sensors	1	387	May 6, 2021
MQ2 gas sensor do not detect gas/smoke Project Guidance	14	567	May 15, 2023