MQ137 Ammonia Sensor for Arduino

Marsoni

M251S

$990.00

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

MQ137 Ammonia Sensor for ArduinoOne size : 32mm X22mm X30mm L * W * H Second, the main chip : LM393, NH3 gas sensing probe Third, the working voltage : DC 5V Four, characteristics: 1, with the signal output LED indicates ; 2 , dual signal output ( analog output , and TTL level output ) ; 3, TTL output valid signal is low ; ( lights lit when the output is low, which can be accessed microcontroller IO port ) 4 , analog output increases with the concentration , the higher the

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These have quickly become mine and my mom's favorite socks. We wear them with tennis shoes, Hey Dudes, and more. The fabric is incredibly soft and comfortable, they do not budge/fall in my shoe, and are extremely well made. I have become so attached to these socks, that I no longer want any other brand.

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Reviewed in the United States on July 4, 2025

Verified Purchase

Peety

Charlottesville, US

★★★★★ 5

Fit is great!

Size: 6-10, Color: Halo Gray/Assorted

These socks fit perfectly and never slip!

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Reviewed in the United States on April 9, 2026

Verified Purchase

tara speece

Draper, US

★★★★★ 5

Comfortable and Durable No-Show Socks

Color: Illusion Green Assorted, Size: Medium

The Under Armour Essential 2.0 No Show Socks are fantastic! This 6-pair pack is perfect for everyday wear, and the socks fit snugly without slipping off the heel. They are lightweight, breathable, and keep my feet comfortable all day, whether I’m working out or running errands. The material feels durable and high-quality, holding up well after multiple washes without losing shape or elasticity. I also appreciate the moisture-wicking feature, which keeps my feet dry during exercise. Overall, these are reliable, comfortable, and well-made socks that are worth every penny.

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Reviewed in the United States on November 16, 2025