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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This milk frother works amazingly well! It’s powerful, easy to use, and creates rich, creamy foam in just seconds. The rechargeable design is very convenient, and the battery lasts a long time between charges. It feels sturdy and well-made, and cleaning it is quick and simple. I use it every day for my coffee, lattes, and hot chocolate, and it has exceeded my expectations. If you’re looking for an affordable and effective milk frother, this is definitely a great choice. Highly recommended

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Reviewed in the United States on June 10, 2026

Verified Purchase

Bueno lo recomiendo

Lexington, US

★★★★★ 5

Nicec

Color: C-Stand Green, Size: Model C Rechargeable

Es de buena calidad lo recomiendo

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Reviewed in the United States on June 3, 2026

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JESSICA DAY

Dallas, US

★★★★★ 5

Love it!

Color: C-Black, Size: Model C Rechargeable

Love mine! No more batteries. I make at least two cups a day and froth my creamer. Love the fact I don’t have to recharge very often.

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Reviewed in the United States on May 19, 2026

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Amazon shopper

Pawtucket, US

★★★★★ 5

Great Little Gadget

Color: C-Black, Size: Model C Rechargeable

What a fun and easy to use gadget! I use it to foam Zero Sugar Coffeemate creamer for my iced coffee and it works perfectly. I thought the on/off button was on the top but it's on the side. I was concerned that I would unintentionally bump it but I don't. Easy to use, easy to clean and price is reasonable.

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Reviewed in the United States on May 2, 2026

Verified Purchase

Billy

Port Orchard, US

★★★★★ 4

Good speed

Color: C-Black, Size: Model C Rechargeable

Love the rechargeable feature, works great as a frother, however, I have to get use to the on/off feature instead of the press to froth like the older unit.

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Reviewed in the United States on March 22, 2026