• TrolMaster WCS-9 Substrate Sensor Set | Multi-Node 3-in-1 VWC, EC & Temperature System
  • TrolMaster WCS-9 Substrate Sensor Set | Multi-Node 3-in-1 VWC, EC & Temperature System
  • TrolMaster WCS-9 Substrate Sensor Set | Multi-Node 3-in-1 VWC, EC & Temperature System
  • TrolMaster WCS-9 Substrate Sensor Set | Multi-Node 3-in-1 VWC, EC & Temperature System
  • TrolMaster WCS-9 Substrate Sensor Set | Multi-Node 3-in-1 VWC, EC & Temperature System
  • TrolMaster WCS-9 Substrate Sensor Set | Multi-Node 3-in-1 VWC, EC & Temperature System
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TrolMaster WCS-9 Substrate Sensor Set | Multi-Node 3-in-1 VWC, EC & Temperature System

£399.95
£399.95
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Product Overview

The TrolMaster WCS-9 represents the next evolution in substrate monitoring, specifically engineered to overcome the limitations of single-point sensing. By utilizing an advanced multi-node architecture, the WCS-9 delivers Precision Measurement that traditional sensors simply cannot match. It recognizes that localized "hot spots" or water channeling can lead to false readings; the WCS-9 solves this through intelligent Data Aggregation, calculating a trustworthy average of Volumetric Water Content (VWC), Electrical Conductivity (EC), and Temperature across up to four separate points in the medium.

Advanced Connectivity & Control

Built for the modern grow room, the WCS-9 features Advanced Daisy-Chain Connectivity, allowing you to link multiple sensor nodes to a single display with ease. This data integrates seamlessly into your TrolMaster ecosystem to enable "Feed on Demand" Control—where your irrigation cycles are triggered by real-time substrate depletion rather than simple timers. With Dynamic Reading Intervals, the system updates constantly, ensuring you are always viewing the most current state of your root zone.

Key Features & Commercial Benefits

  • Precision Data Aggregation: Averages readings from up to 4 nodes to eliminate errors caused by uneven saturation or salt build up.

  • "Feed on Demand" Ready: Use real-time VWC% data to automate irrigation, ensuring plants only receive water when they actually need it.

  • Affordable Scalability: Start with a single node and expand as your facility grows. The WCS-9 offers professional-grade tech at a price point that scales.

  • Simplified Calibration: A streamlined process ensures your sensors are accurately matched to your specific media (Coco, Soil, or Rockwool) in seconds.

  • Free App Access: Monitor your data from anywhere in the world via the TM+ App with no monthly subscription fees.

Technical Specifications

Feature Details
Measurement Nodes Up to 4 individual nodes per Sensor Display
Monitored Metrics VWC%, Substrate EC, Medium Temperature
Data Refresh Dynamic intervals for real-time monitoring
Connectivity Industrial-grade M12 Daisy-Chain Link
Compatibility NFS-1, NFS-2, NFS-3, HCS-2, TCS-1, GCS-1

🛠️ Pro Tips: Optimization & Maintenance

Optimizing "Feed on Demand"

  • Set Your Thresholds: Use the Data Aggregation feature to find your "Field Capacity" (100%) and your "Wilting Point." Set your controller to trigger irrigation when the average VWC% hits your desired dry-back target.

  • Node Spacing: For the most accurate Precision Measurement, space your nodes at different levels of the root mass (Top, Middle, Bottom) to track how moisture moves through the profile.

Cleaning & Maintenance

  • Salt Management: Because high-bulk EC substrates can be aggressive, clean the prongs monthly with 70% Isopropyl Alcohol. This maintains the integrity of the Dynamic Readings and prevents EC drift.

  • Connection Check: Periodically check your Daisy-Chain links for any moisture ingress. A tight, dry M12 connection is key to maintaining stable data flow to the controller.

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View Product Details

One Display. Four Nodes. One Accurate Average.

Daisy-chain up to four WCS-9 sensor nodes into a single display and stop guessing about root zone conditions. By averaging readings across the medium, you get VWC, EC and temperature data you can actually trust — and act on.

Shop the WCS-9

Frequently Asked Questions

The WCS-9 measures Volumetric Water Content (VWC), Electrical Conductivity (EC) and temperature within your growing medium, all from the same sensor node.

The WCS-9 set includes one sensor display and one sensor node. Up to three additional nodes can be added separately to build a full four-node daisy-chain.

The WCS-9 works with the NFS-1, NFS-2, NFS-3, HCS-2, TCS-1 and GCS-1 control systems.

Yes, the WCS-9's calibration process is designed to be quick to set up across different substrate types, including coco, soil and rockwool.

Yes, when paired with a compatible TrolMaster controller, the WCS-9's real-time VWC data can be used to trigger irrigation based on actual substrate conditions.

No, the TM+ app is free to use with the WCS-9, with no ongoing subscription fees for remote monitoring.

By averaging data across multiple nodes rather than relying on one reading, the WCS-9 avoids the false highs or lows caused by localised dry spots or water channelling.

The WCS-9 reads EC from 0–30 mS/cm and temperature from 0–50°C (32–122°F), covering the range most growers need for soil and soilless substrates.

Steel Roots stocks the full TrolMaster range with fast UK delivery and knowledgeable support from growers who understand how these systems fit together. If you're building out a wider TrolMaster setup, we can help you choose the right combination of controllers and sensors for your grow.