MQ-131 Ozone Gas Detection Sensor module

MQ-131 Ozone Gas Detection Sensor module

Marsoni

M251S

$590.00

Get it in 3 business days with 1 day shipping. Friday, May 29

MQ-131 Ozone Gas Detection Sensor moduleMQ131 Sensitive material of MQ131 gas sensor is O3 SnO2, which with lower conductivity in clean air. When Ozone gas exists. The sensors conductivity is higher along with the gas concentration rising. Please use a simple electro circuit, Convert the change of conductivity to correspond to the output signal of gas concentration. MQ131 gas sensor has a high sensitivity to Ozone, also sensitive to O3 CL2, NO2, etc. FEATURES: Working voltage: DC 5V Size:

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Cute!! Works just as good at the original octobuddy and I haven’t had any issues with the mirror coming out like other reviews have. Although, once I stick it on my phone case I never tried to move it or anything. I still prefer the original one just bc this one is a little bulkier. No surprise since it’s part mirror.

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Reviewed in the United States on May 12, 2026

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Melissa Jenilee

Lake Worth, US

★★★★★ 5

Cannot live without it now

Model: Chalk Pink

I don’t know what I would do without this ! Almost any flat surface will work! Even kitchen cabinets! I use this in the shower and in my car I am already ready to film !

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Reviewed in the United States on May 30, 2026

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Kevin Pierce

Waukegan, US

★★★★★ 5

Great Product

Size: 40 Cards Display Case Standard

Great quality! Highly recommend. I use this when I attend card shows and to just show off my collention!

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Reviewed in the United States on February 6, 2026

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Amazon Customer

Alexandria, US

★★★★★ 5

They make your cards look super professional.

Size: 40 Cards Display Case Standard, Size: 40 Cards Display Case Standard

I am moving into my new house soon and over the last month I have purchased 5 of these. They make your cards look super professional. I think I have all that I need but if I ever another one, i would buy this one or I would say that I highly recommend this one, and this is coming from the guy who usually never leaves a review for anything but these are awesome.

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Reviewed in the United States on April 25, 2026

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Judith Wolff

Carnegie, US

★★★★★ 5

Excellent item

Size: 40 Cards Display Case Standard

Fast service, great packaging. Love the display case.

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Reviewed in the United States on June 1, 2026