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🔥Microfire LLC

Water quality and environmental sensors for Arduino or Raspberry Pi


  • Carrier board
  • Carrier board Fritzing
  • Industrial ORP probe
  • Mod-NTC
  • BNC bulkhead pieces
  • Mod-EC on a breadboard


What we do

We design and manufacture water quality sensors. Then we make it as easy as possible to use.

There's something for enthusiasts, professionals, and startups. Our sensor modules can be used in a breadboard to prototype with. Once that works, those same modules can be incorporated into a larger hardware design through castellation. And if you want a totally custom solution you buy our designs and fab everything yourself.



🎉 Featured Product

🌱 Hydroponic Monitoring Kit

Everything needed to measure pH and EC for hydroponic sensors and devices. Includes carrier board, sensor modules, isolation, connectors, temperature sensor, and your choice of lab or industrial probes. Home Assistant YAML makes it easy to integrate into your system.



💙 Favorites

💥 Mod-EC

Add the ability to measure EC to your custom hardware application with a fully digital interface


🧪 Mod-pH

Add the ability to measure pH to your hardware application with a fully digital interface


⚡ Mod-ORP

Add the ability to measure ORP to your hardware application with a fully digital interface.


🌡️ Mod-NTC

Add the ability to measure any 10K NTC temperature sensor to your hardware application with a fully digital interface.



📰 Recent Articles

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Create a Home Assistant sensor from any hardware and send measurements with ESPNow or LoRa.

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👀 SHT40 Waterproof Sensor Review

November 6, 2023

👀 SHT40 Waterproof Sensor Review

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