- One-Press Setup & Autodetection: Automatically detects and configures compatible In-Situ sensors (Rugged TROLL, Aqua TROLL, etc.) for fast deployment.
- Built-in Barometric Sensor: Provides automatic atmospheric pressure compensation for accurate water-level data, even with non-vented sensors.
- Rugged IP68 Design: Fully sealed, submersible, and built for long-term outdoor or harsh-environment monitoring.
- Extended Battery Life: Runs on standard D-cell alkaline or lithium batteries with multi-year performance; supports M1/NB-IoT for minimal power usage.
- Flexible Connectivity: Supports up to 8 instruments via Twistlock; compatible with SDI-12 and Pulse for both In-Situ and third-party sensors.
- Integrated GPS: Automatically records device location for accurate mapping and easier asset management in HydroVu.
- Wireless Setup & Alerts: Configure, view logs, and set alarms through Bluetooth using the VuSitu mobile app (iOS/Android).
- Secure Remote Monitoring: Includes free global cellular data (VuLink CI) and encrypted HTTPS transmission for reliable, continuous remote data access.

VuLink Data Logger
VuLink® is a data logger and global cellular telemetry device that will change the way you think about remote monitoring. Our turnkey solution is easy to set up, works from anywhere, and delivers long-lasting power. So, you never have to worry about your equipment or your data.
VuLink is part of the most complete monitoring solution available. Instrumentation, telemetry, and software work together within In-Situ’s shared ecosystem to make it easier than ever to collect, access, and manage your data.
- Groundwater Monitoring: Tracking water levels and quality in wells for long-term trends or remediation work.
- Surface Water Monitoring: Continuous monitoring of rivers, lakes, and coastal waters for pH, conductivity, temperature, DO, and HAB-related parameters.
- Stormwater Management: Measuring water levels and quality during storm events to assess runoff impacts.
- Mining: Monitoring dewatering operations, pit lakes, and drainage for environmental and operational management.
- Source Water Protection: Monitoring raw water in reservoirs and rivers before treatment.
- Dredging & Remediation: Tracking water quality during sediment removal or contamination cleanup activities.
- Irrigation: Supporting agriculture by monitoring irrigation water supply and quality.
- Industrial & Municipal: General-purpose water monitoring across industrial processes and municipal systems.
- Physical & Environmental
- Dimensions: 1.85 in (47 mm) diameter × 19.1 in (485 mm) length
- Weight: ~2.2 lbs (1.0 kg) with batteries/carabiner, excluding antenna
- Materials: Ryton (housing), Titanium (connectors/eyebolt), 316 Stainless Steel (carabiner)
- Ingress Protection: IP68
- Operating Temperature: -20°C to 50°C (Li-SOCl2/LMO), 5°C to 40°C (Alkaline)
- Storage Temperature: -20°C to 60°C
- Connectivity & Communication
- Cellular: 4G LTE (M1/NB-IoT) with 2G fallback, global roaming
- Satellite: Model dependent
- Protocols: Modbus over RS-485, Pulse (low/high frequency), HTTPS, FTP, SMS
- Connections: One In-Situ Twistlock port, supports up to 8 instruments via splitters/hubs
- Power & Battery
- Battery Options: Alkaline or Lithium (Li-SOCl2/Li-MnO2)
- Battery Life: Up to 12 years (Li-MnO2, hourly reporting); ~2+ years at 15-min intervals (M1/NB-IoT)
- Data & Features
- Data Output: CSV, HydroVu Cloud
- Barometric Compensation: Built-in, automatic for non-vented sensors
- GPS: Built-in antenna, accuracy up to 3 meters
- Setup: Remote configuration supported via VuSitu mobile/PC app



