• TrolMaster WN-9 Substrate Sensor Node | 3-in-1 Expansion Probe for WCS-9 System
  • TrolMaster WN-9 Substrate Sensor Node | 3-in-1 Expansion Probe for WCS-9 System
  • TrolMaster WN-9 Substrate Sensor Node | 3-in-1 Expansion Probe for WCS-9 System
  • TrolMaster WN-9 Substrate Sensor Node | 3-in-1 Expansion Probe for WCS-9 System
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TrolMaster WN-9 Substrate Sensor Node | 3-in-1 Expansion Probe for WCS-9 System

£134.95
£134.95
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Product Overview

The TrolMaster WN-9 is the dedicated sensing engine behind the revolutionary WCS-9 system. Engineered for professional cultivators who refuse to rely on single-point data, the WN-9 is a professional-grade 3-in-1 measurement probe designed to capture hyper-accurate root zone metrics. Whether you are working with traditional soil or high-bulk EC soilless substrates, the WN-9 provides the verified data required for elite crop steering and plant health management.

Hardware & Precision Measurement

Each WN-9 Node is built with robust stainless steel spikes that provide continuous, high-fidelity monitoring of Volumetric Water Content (VWC) and Electrical Conductivity (EC). To complete the data profile, a precision temperature sensor is embedded directly into the probe, allowing you to track root-zone heat levels with scientific accuracy. This hardware is specifically calibrated to operate flawlessly in aggressive, high-nutrient environments without signal drift.

Daisy-Chain Connectivity & Scalability

The WN-9 was born to eliminate the "localized anomaly" problem. By utilizing its Advanced Daisy-Chain Connectivity, growers can link up to four individual WN-9 Sensor Nodes together into a single WCS-9 display. This multi-node architecture allows the system to aggregate data from multiple points in the pot or slab, calculating a highly reliable average that bypasses "hot spots" or water channelling errors. Scalability has never been simpler—add more nodes as your monitoring needs evolve.

Key Features

  • Hyper-Accurate 3-in-1 Sensing: Simultaneously tracks VWC%, Substrate EC, and root-zone Temperature.

  • Expansion Ready: Specifically designed to daisy-chain with the WCS-9 system for multi-point data averaging.

  • Industrial Build Quality: Features heavy-duty stainless steel prongs for long-term durability in soil and soilless media.

  • Eliminate Data Skew: By using multiple WN-9 nodes, you ensure your irrigation triggers are based on the whole medium, not just one wet spot.

  • Plug-and-Play Integration: Uses standard M12 digital connectors for a secure, fast setup.

Technical Specifications

Feature Details
Compatibility Exclusively for TrolMaster WCS-9 System
Max Nodes per Display 4 (Daisy-Chained)
Sensor Type Stainless Steel 3-Prong (VWC, EC, Temp)
Media Compatibility Rockwool, Coco, Soil, and High-EC Substrates
Connectivity M12 Digital Link
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Expand Your Root Zone Monitoring with Professional-Grade Precision

The TrolMaster WN-9 Substrate Sensor Node is designed to expand your WCS-9 Substrate Sensor System, giving growers a more complete picture of root zone conditions across multiple plants, pots or irrigation zones. By measuring Volumetric Water Content (VWC), Electrical Conductivity (EC) and root zone temperature simultaneously, the WN-9 helps growers make smarter irrigation and nutrient management decisions based on real-time data rather than guesswork.

Unlike single-point sensors that can be affected by localised dry spots or nutrient build-up, the WN-9 supports daisy-chain expansion, allowing up to four sensor nodes to work together with a single WCS-9 Display. This provides more representative average readings across your crop, helping vegetable growers optimise irrigation timing, improve crop steering, reduce overwatering and produce healthier, more consistent harvests in commercial growing environments.

View the WCS-9 System

Frequently Asked Questions

The WN-9 simultaneously measures substrate moisture (VWC), electrical conductivity (EC) and root zone temperature, giving growers a complete picture of root zone health.

No. The WN-9 is an expansion sensor node and must be connected to a TrolMaster WCS-9 Display to operate. It is not a standalone product.

The WN-9 is designed for use in soil, coco coir, rockwool and other high-EC soilless growing media, making it suitable for a wide range of indoor growing systems.

Each WCS-9 Display supports up to four WN-9 Sensor Nodes, allowing growers to monitor multiple areas and calculate reliable average readings across the crop.

Using multiple sensor nodes reduces inaccurate readings caused by localised dry spots, irrigation channeling or nutrient hotspots. This provides a much more accurate understanding of your entire root zone.

The WN-9 provides live moisture data that supports Feed on Demand irrigation strategies, allowing watering decisions to be based on actual substrate conditions rather than fixed timers. This helps improve water efficiency and crop consistency.

The WN-9 integrates with the WCS-9 Display and is compatible with Aqua-X, Aqua-X Pro, Aqua-X Plus, Hydro-X Pro, Tent-X and Green-X control systems.

Yes. The WN-9 has been designed for both professional and commercial cultivation facilities where accurate root zone monitoring helps improve irrigation precision, crop steering and overall plant performance.