2, dual signal output (analog output and TTL level output);
3. The TTL output valid signal is low level; (when the output low level, the signal light is on, it can be connected to the IO port of the single chip)
4. The analog output increases with increasing concentration, and the higher the concentration, the higher the voltage;
5. High sensitivity and selectivity to ammonia;
6. Has a long service life and reliable stability;
7. Fast res ponse recovery features;
8. With mounting holes for easy installation;
9. The probe can be plugged and unplugged for easy testing.
Application:
Harmful gas detection device for home and environment, suitable for the detection of ammonia vapor, ammonia gas sensor test concentration range: 10 to 300ppm
Provide reference routines, circuit diagrams, and probe instructions
Package Included:
1 x MQ-137 Ammonia Sensor Module NH3 Sensor Module
Tips:For questions about your order, place of delivery, product discount, taxation, delivery time, warranty, shipping, payment, exchange rate, and other questions unrelated to the product, please contact customer service.
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A part of the QA has been auto-translated.
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Q:
What is the input interface ? USB C or micro USB ?
What is the input interface ? USB C or micro USB ?
работи страхотно държи батериите здраво не изкачат като от китаиските зарядни
It works great, holds the batteries tight, does not jump like from Chinese chargers
Answered by BGTheBadWolF0986BG on February 20,2025Helpful (0)
Micro USB
Micro USB
Answered by BG328354133 on January 24,2023Helpful (0)
KeineAhnung
No idea
Answered by waage231 on November 24,2020Helpful (0)
Looking at the Designed for Usability photo I would have said that it was a USB C connector. Either way it comes with a cable according to the description.
Looking at the Designed for Usability photo I would have said that it was a USB C connector. Either way it comes with a cable according to the description.
Answered by mark on February 23,2020Helpful (0)
micro USB
micro USB
Answered by wangyanyi on January 06,2020Helpful (0)