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Engineered in Germany · since 2007

Water data, in real time.
Encrypted. Autonomous. Anywhere.

TerraTransfer builds rugged measurement systems for flood early warning, drinking-water utilities and water-quality protection. From a 1-inch submersible logger to off-grid climate stations, designed for permanent field deployment and the requirements of national agencies and utilities.

Contact us → Product portfolio
10 yearsbattery life
IP68permanent field use
TLSBSI-grade security
30+ countriesdeployed
Fast boat at golden sunset over the sea with offshore wind turbines on the horizon
Water level
2,84 m
↑ 0.04 m / 1 h
Water temp.
14,7 °C
SDI-12 · stable
Transmission
LTE-M
−42 dBm · TLS
BSI-grade securityTLS transport encryption, signed firmware, PIN-protected Bluetooth access.
Up to 10 years off-gridLithium batteries, solar, ultra-low-power (<10 µA).
LTE-M + Bluetooth 5Real-time telemetry, browser-based commissioning.
Open standardsSDI-12 V1.3 · Modbus · Bluetooth 5.
Solutions

From a stream gauge to a city-wide early-warning network

Four application areas where TerraTransfer systems are deployed today, by national agencies, water utilities, research institutions and OEM partners across more than 30 countries.

Flood early warning

Real-time water level, rainfall and discharge, autonomous measurement, redundant telemetry, SMS and e-mail alerts. Aligned with the EU Floods Directive (2007/60/EC) and WMO Early Warnings for All.

Level · Rainfall · Discharge Alerts LTE-M redundancy
Learn more →

Drinking water & utilities

Well levels, pressure, flow and consumption, continuous monitoring of production wells, reservoirs and distribution networks. Pulse-counter adapters for any standard water meter.

Well monitoring Pressure / flow Utilities
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Water-quality monitoring

Dissolved oxygen, turbidity, conductivity, nitrate, pH, multi-parameter chains and buoys for compliance with the EU Water Framework Directive and ecological early warning in lakes and rivers.

DO · pH · Turbidity Buoys Research
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Climate & research

Off-grid climate stations with solar/battery power and optional satellite backhaul, from permafrost boreholes to tropical field studies. Customisable with any SDI-12 or Modbus sensor.

Solar / Satellite Permafrost · Tropics SDI-12 · Modbus
Learn more →
Product portfolio

One modular system, from sensor to cloud

All TerraTransfer components speak the same protocols and interoperate seamlessly: SDI-12 V1.3, Bluetooth 5 and LTE-M.

Aquatos Web LTX data logger
Data logger · Type 1500

Aquatos Web LTX

Flagship logger with LTE-M, TLS-encrypted transport and 24 SDI-12 channels. Fully programmable, IP68, up to 10 years off-grid.

  • LTE-M + NB-IoT fallback
  • 24 SDI-12 channels
  • −25 °C to +85 °C
Datasheet →
Aquatos mini data logger
Data logger · BLE

Aquatos mini

Compact BLE logger for groundwater and stage-level measurements. 1" or 2" housing, 250,000-record memory.

  • Bluetooth Low Energy
  • Integrated barometer
  • User-replaceable lithium batteries
Datasheet →
Aquatos nano, 1-inch submersible with stainless steel diaphragm and POM housing
Submersible · 1"

Aquatos nano

All-in-one submersible probe, sensor, logger and BLE radio in a single 1" housing. Ideal for wells, gauging shafts and flood protection.

  • Pressure + temperature
  • Bluetooth read-out
  • Ultra-compact form factor
Datasheet →
TerraTransfer monitoring buoy in operation: black float platform with stainless-steel support frame
Platform

Monitoring buoys

Stainless-steel buoys for lakes, reservoirs, harbours and rivers. Standard and shallow-water variants, operational from 20 cm depth.

  • Stainless steel, protective coating
  • Central mast mount
  • Multi-parameter ready
Datasheet →
Thermistor chain with measurement nodes
SDI-12 · Sensor

Thermistor chain

Up to 30 thermistor nodes on one chain, vertical stratification analysis at ±0.1 °C accuracy.

  • ±0.1 °C / 0.01 °C resolution
  • Cable lengths up to 200 m
  • Permafrost · lakes · reservoirs
Datasheet →
Piezo pressure sensor Type 0312 with SDI-12 and Bluetooth
SDI-12 · Bluetooth 5

Sensors & adapters

Piezoresistive and ceramic pressure transducers, frequency/pulse counters, Modbus converters, all SDI-12 V1.3-compliant with <10 µA quiescent current.

  • Type 0312 · Piezo (5–100 mWS)
  • Type 0420 · Ceramic (Huba 713)
  • Type 0330 · Pulse / frequency
  • Type 0210 · Modbus → SDI-12
Datasheet →
Software stack

Sensormanager, your data, always at a glance.

Web portal with time-series charts, maps, alarms and CSV/FTP export, plus LTX Microcloud and a Bluetooth app in the browser. BSI- and GDPR-compliant, EU hosting, optionally on-premise.

Licence model: No annual SaaS fees, one-off setup licence per device, valid for life including Sensormanager cloud access.

View the software stack →

Research & Innovation

Current EU-funded research projects

We don't just build, we actively research. Two ongoing collaborative projects with Fraunhofer, FAU Erlangen, the City of Gütersloh and Erftverband.

RIVERCAST · 2025–2028

AI flood forecasting via hybrid satellite communication

EFRE/JTF collaborative project (GreenEconomy.IN.NRW) led by TerraTransfer. LEO satellite + LTE-M redundancy, AI models for regional early warning.

FAU Erlangen Hybrid radio/sat EFRE/JTF
View project (German) →
IoT4SRGK · City of Gütersloh

Better heavy-rain hazard maps through real-time data

EFRE/JTF innovation project with the City of Gütersloh, Fraunhofer IOSB-INA and itwh GmbH. Rainfall, soil moisture and evaporation as model input.

Fraunhofer IOSB-INA City of Gütersloh EFRE/JTF
View project (German) →
Security & compliance

Built for critical infrastructure

National agencies, municipal utilities and operators trust our devices with their gauging networks, and there are good reasons for that.

TLS transportEncrypted data transmission logger ↔ server
Signed firmwareOnly signed updates · BLE or OTA
PIN-protected BLE access6–16 digit PIN, never in cleartext, lockout
CE · RED · RoHSEU Radio Equipment Directive 2014/53/EU, EMC 2014/30/EU
GDPR-compliantEU hosting · audit logs · data residency
IP68 · −25 °C to +85 °CSubmersible, frost-proof, permanent field use
Open standardsSDI-12 V1.3 · Modbus · Bluetooth 5
Engineered in GermanyR&D and manufacturing in Bochum, NRW

Let's talk about your monitoring network.

Whether you operate 5 stations or 5,000, we deliver hardware, software and commissioning from a single source. Typical response within one business day.

Contact us → info@terratransfer.de