The SM-EC is an electrochemical ozone sensor module for use with our OS-4 or OS-6 digital ozone controller, or as a stand alone module using the RS-232 output. This technology from Eco Sensors provides accurate ppb-level detection and resolution over a wide (.02-20 ppm, or 1-50 ppm) concentration range. The sensor module is compensated for temperature and humidity effects, with little to no cross sensitivity to VOC’s. The SM-EC makes our digital instruments more accurate at both ppb and high ppm levels of ozone, enabling improved monitoring and control for our users.

Typical Applications:

  • Laundries using ozone.
  • Large noisy factory environments.
  • Casinos and other ozonated public areas.
  • Agricultural/cold storage areas.
  • Farms.
  • Food processing plants.


  • 25 ppb sensitivity with 5 ppb resolution.
  • Choice of two operating ranges (0-20 ppm or 1-50 ppm).
  • Electrochemical Sensor
  • Wide detection range
  • Low Power
  • Low Maintenance
  • Uses easily available 8-24 VDC power.
  • Small enough to mount almost anywhere.

Product Manual


Sku: SM-7

    Additional information

    Weight 2 lbs
    Dimensions 10 × 10 × 5 in
    Sensor Option

    SM-7/SM-EC 0-20 ppm, SM-7/SM-EC 1-50 ppm

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