Wireless Optical Dissolved Oxygen (ODO) Sensor

Product Code: PS-3224


The Wireless Optical Dissolved Oxygen (ODO) Sensor is ideal for monitoring DO2 in the lab or field. The Wireless Optical DO Sensor contains three different sensors. In addition to the dissolved oxygen sensor, it also includes sensors for measuring atmospheric pressure and water temperature. The optical technology is accurate, fast, and does not require stirring, filling solutions, warm-up, or frequent calibration. When equipped with the included cover, the sensor has a waterproof design and is submersible to a depth of 10 m.

A PASCO exclusive feature allows you to log data using the sensor’s built-in memory. After collecting data for hours or even days, simply connect the sensor to your device and you’re ready to download your data. With this powerful sensor, educators can explore day and night nutrient cycles, changes in metabolic processes, seasonal changes in water quality, and more.


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

What’s Included

  • 1x USB Cable (for recharging and optional direct connection)
  • 1x Protective cover

Product Specifications

Dissolved Oxygen Range 0 to 20 mg/L, 0 to 300% saturation
Accuracy – with user calibration ±0.2 mg/L or 1% (whichever is greater)
Accuracy – out of the box ±0.5 mg/L or 3% (whichever is greater)
Response Time 90% in 45 sec
Measurements Concentration (mg/L), Saturation (%), O2 Gas (in air, qualitative) (%), Temperature (°C)
Waterproof Depth 10m (30ft)

Battery & Logging

Stored Data Points Memory (Logging) 1 >25,000
Battery – Connected (Data Collection Mode) 2 >40 hr
Battery – Logging (Data Logging Mode) 3 45 hrs
Battery Type LiPo

1 Minimum # of data points with all measurements enabled, actual results depend on enabled measurements.

2 Continuous use in a connected state until battery failure, actual results will depend on sample rate, active measurements, and battery condition.

3 Logging until battery failure, actual results will depend on sample rate, active measurements, and battery condition.

* Normal classroom use is the sensor in active use for 20min/lab for 120 lab periods/yr.

Recommended Accessories

Wireless Sensor Charging Station PS-3599

Replacement Parts

Wireless Optical Dissolved Oxygen Sensor Cap PS-3605
Micro USB Cable PS-3584

Also Available

USB Bluetooth Adapter PS-3500
Wireless Optical Dissolved Oxygen Sensor Metal Guard PS-3604

Support Documents