This is the LuminOx O2 (Oxygen) RS232 TTL driven sensor a high accuracy fluorescence based optical sensor series, design and develop by SST sensing. This device is capable of detecting and measuring ambient oxygen partial pressure PP02 level using the principle of fluorescence quenching by oxygen. The LumixO2 measures ppo2, temperature and an optional measures barometric pressure and convert to oxygen contrition in percentage.

This sensor runs on low power operation traditionally associated with electrochemical and galvanic sensors. LuminOx is PPO2 and temperature compensated, enabling linear operation over a wide environmental range without need for additional system for data acquisition. This device does not contain lead or any other hazardous materials and it has no cross sensitivity to other gases. On this example we will going to wire this device to our microcontroller for testing.

Oxygen Sensor can be used in respiration, marine, research & development, fast reaction monitoring, fuel tank monitoring, hydrocarbon environment, long-term process monitoring, fermentation, food and beverages packaging, automotive, medical and pharmaceutical, and other industrial process.

For more details about the SST LuminOs please refer to the datasheet.

Required Components

  • Arduino Microcontrollers, NodeMCU, Teensy Board, TeensyDuino, ESP8266 12, 12E, ESP32, ESP32S,ESP8266 NodeMCU, ESPDuino, ATMEGA328 16/12, ATMEGA32u4 16/8/ MHz, ESP8266, ATMEGA250 16 MHz, ATSAM3x8E, ATSAM21D, ATTINY85 16/8 MHz, (Note: The Diagram below is using NANO. (please refer to the respective pin-outs)
  • LumiOx O2 Oxygen Sensor
  • RS232 (MAX2232) / Module
  • Display panel is optional you can  use one of the following
  • 0.01 Capacitor (Optional)

Wiring Guide

LumiOx Oxygen Sensor

Source Code


  • Download LuminOx Datasheet | PDF
  • Download LuminOx User Guide | PDF
Wiring LuminOx O2 / Oxygen RS232 Optical Sensor
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2 thoughts on “Wiring LuminOx O2 / Oxygen RS232 Optical Sensor

  • at

    exit status 1
    ‘accel’ was not declared in this scope

    Can you post a working code?


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