Our patented soil moisture monitoring technology: TDT⁵
Outstanding accuracy, stability, and performance.
Features an antenna design 5 times its physical length.
How It Works
5 Key Benefits
1. Coiled Antenna = 5× Sensitivity
Each 15 cm segment acts like a 75 cm probe thanks to densely wound antennas (20 turns/cm).
2. Fully Integrated Design
Antennas and electronics are built onto the same board—compact, reliable, and cost‑efficient.
3. Ultra-Stable Accuracy
Each reading uses 400,000 pulses—averaged for consistency, with <1% noise.
4. Fast, Low‑Power Sampling
Readings take <100 ms. Ideal for battery‑powered or remote systems.
5. Built for the Field
Encased in epoxy and polycarbonate. No exposed parts. Shock- and weather-resistant.
Why Use TDT⁵?
| Feature | Benefit |
|---|---|
| Multi-depth sensing | Continuous data across the root zone |
| Compact format | Easy installation, fewer components |
| One cable, many sensors | SDI‑12 or RS‑485 simplifies wiring |
| Energy-efficient | Long-term remote deployments |
| Calibrated & accurate | ±2% VWC, ±0.5 °C temp resolution |
| Custom lengths | 30 to 120 cm, 2–8 segments |
GroPoint TDT⁵ provides comprehensive, full-profile soil moisture insights, moving beyond the limitations of sensors that only measure a small "focal point."
Custom Engineering
Custom soil moisture sensors powered by patented TDT5 technology
Flexible designs: vertical, horizontal, deep or shallow installations
Engineered for agriculture, research, and OEM integration
Long signal paths for precision
Reliable in all soil types
Designed and manufactured in Canada with proven field performance
Applications
Precision irrigation
Smart farming (LoRaWAN-ready)
Environmental monitoring
Research & land management
Understanding TDT⁵
GroPoint™ soil sensors are based on the field-proven Time Domain Transmission (TDT) method of reliably measuring soil moisture, which is a refined version of Time Domain Reflectometry (TDR). TDT-based sensors do not need to be calibrated to each type of soil they will be buried in to deliver excellent accuracy and stability, however we do calibrate for 3 specific soil types for even greater accuracy.
Comprehensive Soil Moisture Profiling with GroPoint TDT⁵
GroPoint TDT⁵ provides comprehensive, full-profile soil moisture insights, moving beyond the limitations of sensors that only measure a small "focal point." Our patented TDT⁵ technology features a unique, extended antenna design that enables the sensor to interact with and measure a significantly larger and more representative volume of soil. This delivers uniform, accurate moisture readings across the entire profile, empowering you with complete data for precise irrigation management and optimal crop health.