smarTROLL RDO Handheld System 1024x768smarTROLL RDO

The smarTROLL Rugged Dissolved Oxygen Handheld system merges smartphone mobility with an innovative optical RDO sensor.

Ideal for water quality testing spot checks, the probe measures and records dissolved oxygen, barometric pressure, air and water temperature, sending data wirelessly to your smartphone or tablet.


  • Real-time data
  • Auto-calibration functions
  • Site tagging with photos and GPS coordinates
  • Replaceable battery pack
  • Field-replaceable sensor cap
  • Instant data-sharing
  • NIST calibration report for guaranteed accuracy


  • Reduce costs — Use your existing mobile device and never have to purchase bulky, expensive meters again.
  • Start monitoring ASAP — Sensor is pre-calibrated at the factory, and iSitu app (sold separately) eliminates training and setup.
  • Faster spot checks — Device automatically recognizes calibration solutions and corrects for barometric pressure.
  • Streamline data sharing — Get instant results and email them on the spot.