Wireless Optical Dissolved Oxygen (ODO) Sensor

Product Code: PS-3224


The Wireless Optical Dissolved Oxygen (ODO) Sensor is the perfect solution to monitor DO in the lab or the field. Optical technology is accurate, fast, and does not need flow or calibration.

The Wireless Optical Dissolved Oxygen (ODO) Sensor actually contains three different probes. In addition to dissolved oxygen, there are also probes for atmospheric pressure and the water temperature.

A PASCO exclusive feature allows you to log data using the sensor’s built-in memory. After hours or even days, connect the sensor to your device and download the data. You can capture day/night nutrient cycles, changes in metabolic processes and more.

With the included cover, the sensor has a waterproof design and is submersible to 10 m.


Perform the following experiments and more with the Wireless Optical Dissolved Oxygen Sensor.
Visit PASCO’s Experiment Library to view all activities for this product.

All PASCO Wireless Sensors connect to computers, Chromebooks, and tablets, through Bluetooth 4. No other equipment required! Our software (SPARKvue or PASCO Capstone) allows students to see and analyze data in real-time.

Long-lasting, rechargeable battery

The Wireless Optical Dissolved Oxygen Sensor draws as little current as possible. This provides you with a long battery life for lab activities. Our software also displays the battery level at all times. If it dips too low, connect the USB cable to charge while you collect data.

Typical Labs and Applications

  • Photosynthesis
  • Respiration
  • Fermentation
  • Monitoring water quality
  • Investigating watersheds
  • Measuring net primary productivity
  • Modeling ecosystems
  • Exploring how temperature affects the amount of dissolved oxygen


  • Wireless Optical Dissolved Oxygen Sensor
  • Sensor Cap
  • USB Charging cable


Response Time
  • 90 % in 45 sec
Operating Temperature
  • 0-50° C
  • 0-20 mg/L or 0-300% saturation
Compensating measurements
  • Reports solution temperature and ambient pressure
  • ±0.2 mg/L or 1% (whichever is greater) with user calibration
  • ±0.5 mg/L or 3% (whichever is greater) without user calibration
  • >200% saturation ±10%