Unless you need vented level data, the Level TROLL 400 is In-Situ's low-maintenance option: it measures and logs water level, water pressure, and temperature in non-vented (absolute) pressure ranges, with no desiccant required. That makes it ideal for long-term monitoring at flood-prone or high-humidity sites where a vented cable isn't practical.

3D factory calibration and In-Situ's anti-drift system keep readings accurate, and durable titanium construction withstands harsh conditions in fresh or saltwater, groundwater or surface water. As part of In-Situ's shared ecosystem, it integrates easily with accessories, in-well telemetry, VuLink, and HydroVu Data Services, and Smart Addressing means you can swap in another In-Situ device without reprogramming.

Note: Twist-Lock Backshell/Hanger sold separately.