MQ-139 Freon Halogen Gas Sensor for Arduino & Raspberry Pi

brand: SainSmart SKU: 20-011-995 Variants ID: 45101877844
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Detection range: 10 ppm -1000 ppmR134a


  • High sensitivity to Freon Gas
  • Long life and low cost
  • Simple drive circuit


Product structure diagram:



For the family, the environment of the freon gas detection devices. Suitable for the R11, R22, R113, R134A, R409A, R410A, etc. detection.

Package List:

  • 1X SainSmart MQ-139 MQ139 Freon Halogen Gas Sensor For Arduino UNO Mega2560 R3 Raspberry Pi