Cart 0


Aqua TROLL 400 Multiparameter Probe
Manufactured by:  In-Situ


  • 12 parameters from six sensors
  • DO readings automatically compensate for salinity
  • Modbus/RS485 or SDI-12 protocols
  • Compact instrument
  • Durable materials
  • Versatile power options (no internal battery)
  • Real-time readings (data storage unavailable)


  • Ideal for long-term monitoring – Rugged probe can be deployed for months of unattended operation.
  • Control project costs – Durable networking probe withstands harsh field conditions.
  • Reliable data – Patented, EPA-approved optical RDO sensor, plus multiparameter sensors that prevent drift that comes with age.
  • Fits your deployment – Compact design for narrow deployment locations.
  • 24/7 data access – Open communication protocols easily integrate into your existing telemetry system and HydroVu Data Services.