For customers looking to purchase a methane sensor module, we have compared the company's various methane (CH4) sensor modules by feature.
There are 3 types as % LEL sensing, low concentration sensing up to 5,000ppm, high-concentration up to 100 vol % sensing.
A low-cost single sensor is newly developed for the% LEL sensing type.
You can quickly select the model you want to purchase by looking at the comparison chart.
Details can be found in the data sheet on the product introduction page.

Characteristics	Single CH4-3V, 5V, 100 %LEL, Economic type	Dual CH4-3V, 5V, 100 %LEL	Dual CH4-3V, 0~5,000ppm, Low ppm detection	Dual CH4-3V, 0~5,000ppm, Low ppm detection, - Flow type	Single CH4   50%, 100% vol.
Model Number	2 models	2 models	2 models	2 models	3 models
Model Name	CH4-S3-3V, CH4-S3-5V	CH4-D3-3V, CH4-D3-5V	CH4-LD-3V (5K) CH4-LD-3V (50K)	CH4-LF-3V (5K)   CH4-LF-3V (50K)	CH4-H100-3V, CH4-H100-5V, CH4-H100-12V
Sampling type	Diffusion	Diffusion	Diffusion	Flow Through	Diffusion
Detection Range (ordering Option)	0~100 % LEL	0~100 % LEL	0 ~ 10% LEL or 0 ~ 100 % LEL,	0 ~ 10% LEL or 0 ~ 100 % LEL,	0 ~ 50% vol.
	0 ~ 50,000ppm	0 ~ 50,000ppm	0 ~ 5000ppm or 0 ~ 50,000ppm	0 ~ 5000ppm or 0 ~ 50,000ppm	0 ~ 100% vol.
Accuracy	3% F. S.	3% F. S.	3% F. S.	3% F. S.	3% F. S.
Output unit	500ppm, 1% LEL	500ppm, 1% LEL	50ppm, 0.1% LEL	50ppm, 0.1% LEL	0.1% vol.
Detection Limit	1000ppm, 2% LEL	1000ppm, 2% LEL	100ppm, 0.2% LEL	100ppm, 0.2% LEL	1000ppm, 0.1 % vol.
Sensitivity	500ppm, 1% LEL	500ppm, 1% LEL	100ppm, 0.2% LEL	100ppm, 0.2% LEL	1000ppm, 0.1 % vol.