


MQ137 Ammonia Sensor for Arduino
Marsoni
M251S
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
Quick Dispatch:
Your MQ137 Ammonia Sensor for Arduino orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your MQ137 Ammonia Sensor for Arduino ships.
Need Help?
Questions about MQ137 Ammonia Sensor for Arduino, sizing, or delivery? We're just an email away.
Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for MQ137 Ammonia Sensor for Arduino in your area.
Get Shipping Estimates
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
You may also like
4.2 ★★★★★
Based on 468 reviews
Sort
Product Reviews
★★★★★ 5
Falling asleep faster
These have been working very well! I have noticed falling that when I take these I fall asleep much easier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
I get a great night's sleep, plus I love the low price. Great buy
I always get a great night's sleep using this brand. Will buy again. I love the low price as well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Tabs work 100 per cent
Product worked well for my system. A bit too well. I took a whole tab the first night and l was out before planned. Too 1/4 tab the second time and it felt more natural.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 4
Extra strength melatonin
This item is ok to take only as needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
★★★★★ 5
Good product
Worked well on my silver jewelry chains.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
recommand products
Targa Widespread Lavatory Faucet - Spout Only in Multiple Finishes Length:18" Width:12" Height:4"
922.50
Adley Wall-Mounted Lavatory Faucet in Multiple Finishes Length:18" Width:12" Height:4"
512.00
Finezza DUE M-Series Thermostatic Shower System - Shower with Handshower (Rough & Trim) in Multiple Finishes
3810.00
Immersion Floor-Mounted Exposed Tub Filler in Multiple Finishes
4181.50
Adley Roman Tub in Multiple Finishes Length:18" Width:12" Height:4"
1214.50