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LuminOx Optical Oxygen Sensors


The low cost, low power and long life are what differentiates the LuminOx gaseous optical oxygen sensor from other oxygen sensors.

Developed and manufactured by SST, the LuminOx family is a range of factory calibrated oxygen sensors which measure ambient oxygen levels using the principle of fluorescence quenching by oxygen.

The patented technology allows SST to produce a sensor that provides low power operation, while offering a much longer lifetime than electrochemical and galvanic sensors.

The LuminOx oxygen sensor is internally temperature compensated meaning the customer does not need to consider this in their design. It also communicates directly to the customer’s UART so no signal conditioning circuitry is required.

LuminOx is a completely solid state sensor and contains no lead or liquid electrolytes. It is therefore 100% RoHS compliant. It also has virtually no cross sensitivity, allowing it to be used in applications where other technologies are unreliable due to the particular mix of gases present.

LuminOx measures the partial pressure of oxygen (ppO2) which, along with the internal sensor temperature is communicated serially to the host microcontroller. LuminOx is also available with an internal barometric pressure sensor. This enables oxygen concentration (%O2) to be calculated and transmitted, along with the ppO2, temperature and barometric pressure.


Part Numbering Guide

Sensor mounted from inside vessel


Supply Voltage (Vs) 4.5Vdc to 5.5Vdc
Supply Current (Is)
Output Type 3.3V TTL level UART
Temperature Limits
    Operating -30 to +60°C
    Storage -30 to +60°C
Humidity 0-99% Rh (non condensing)
Barometric Pressure Range LOX-02 500-1200mbar


Oxygen Range 0-25% O2
Oxygen Pressure Range 0-300mbar ppO2
    Temperature Indication only
    Pressure ±5mbar
    O2 Determined by ppO2 &
pressure accuracy
    ppO2 0.1mbar
    Temperature 0.1°C
    Pressure 1mbar
    O2 0.01%
Lifetime > 5 years





Pin Designation
1 Vs (+5V)
2 GND (0V)
3 3.3V UART Sensor Transmit
4 3.3V UART Sensor Receive


  • Fluorescent-based technology
  • Factory calibrated
  • Extended temperature range
  • Maintenance free
  • Battery power usage
  • No need for additional electronics
  • Compact in size


  • Long life, non-depleting technology
  • Low power
  • High accuracy
  • Low cost
  • RoHS compliant
  • Contains no hazardous materials
  • Full technical and application support available
  • This field is for validation purposes and should be left unchanged.