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Shah Nelson photo
United Kingdom, Belfast
1 Level
704 Review
27 Karma

Review on πŸ”Œ Complete Starter Kit: 1 Pack MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 Gas Sensor Module Set by Shah Nelson

Revainrating 3 out of 5

Not a bad NH3 detector for the money but not very accurate and has some limitations.

Relatively inaccurate if you want decent ppm readings. This is more useful for simply detecting the presence of NH3 than for getting accurate readings. Another disadvantage is the very long warm-up time of several hours. That being said, if you just want to build an NH3 detector, this will work. Keep in mind that a good NH3 sensor costs over $400.

Pros
  • High marks for tester support and durability
Cons
  • Not as thick as other options