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MQ137 Ammonia Sensor for Arduino
MQ137 Ammonia Sensor for Arduino
MQ137 Ammonia Sensor for Arduino
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MQ137 Ammonia Sensor for Arduino

Marsoni M251S
Sale price$990.00
Pay 4 payments of $247.50 a month.Shop Pay
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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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 967 reviews
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Verified Purchase
patrina green
Charlottesville, US
★★★★★ 5
Great case
Color: Purple Pink
My daughter loves it and the color is marvelous. It was easy to put on, I would buy again worth my money. Very sterdy as good for kids that love to drop their tablet. I like how its has a strap so your kid can carry it on their over there shoulders.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
M
Verified Purchase
Miguel garcia
Belleville, US
★★★★★ 5
Case
Color: Purple Pink, Color: Purple Pink
Calificado en Estados Unidos el 15 de febrero de 2026 Color: Púrpura Rosa bought this case for my daughter.The fit is perfect — all the buttons and camera line up exactly and it snaps on securely.The case feels sturdy, protective, and durable but not too heavy, so she can still carry it comfortably.The stand feature is convenie…
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
B
Verified Purchase
Brenda McMullen
Belleville, US
★★★★★ 5
Quality
Color: Black
Fits perfectly! Great for kids who are rough on iPads. Seems indestructible
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
T
Verified Purchase
Tyia
Bozeman, US
★★★★★ 4
Good buy
Color: Purple Pink
Everything as pictured good quality and durable only thing I didn’t like is the strap isn’t adjustable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
C
Verified Purchase
Cameron Whitworth
Carnegie, US
★★★★★ 5
Good for kids
Color: Purple Pink
Perfect for my daughter’s new iPad. Very durable. Love the pink and purple color. Easy to put together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026

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