- 1 x WCS-9 Sensor Display
- 1 x WN-9 Sensor Node
- 1 x 16ft RJ12 Cable Set
- 1 x T-Splitter
TrolMaster WCS-9 3-in-1 Substrate Sensor Set (VWC, EC, Temp)
- Monitors volumetric water content, electrical conductivity, and temperature within a 0 to 50 degree Celsius range.
- Daisy-chain connectivity supports multiple sensor nodes on one line to keep your facility cables organised.
- Integrates directly with Aqua-X and Hydro-X platforms to trigger automatic irrigation cycles.
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
- You are switching to feed-on-demand irrigation because your timer-based cycles leave your substrate too dry when temperatures spike.
- You are adding root-zone monitoring because you need to see exactly what is happening in the medium instead of relying on manual pot checks.
- We suggest mapping your sensor placement early, as the daisy-chain setup saves significantly on cable labour and clutter.
- The data averaging function is the real winner here for smoothing out readings if your emitters have inconsistent flow.
- Operators who integrated these sensors with their irrigation system report they no longer worry about dry pockets in large-volume pots.
- Growers who moved to this multi-point setup say they have a much clearer picture of salt build-up compared to single-probe systems.
TrolMaster WCS-9 3-in-1 Substrate Sensor Set (VWC, EC, Temp)
Commercial cultivation demands precision, yet localized variations in substrate can lead to uneven growth and wasted nutrients. The TrolMaster WCS-9 Substrate Sensor Set provides professional growers with high-precision measurements of Volumetric Water Content (VWC), Electrical Conductivity (EC), and Temperature within the root zone. By integrating directly with controllers like the TrolMaster Aqua-X NFS-1, this system enables you to automate irrigation based on real-time substrate data, ensuring a perfect balance for every plant.
What's Included
Features

Precision Measurement
Capture high-accuracy VWC, EC, and temperature probes for a complete view of root zone health and nutrient availability.

Data Aggregation
System averages readings from multiple sensors to eliminate data skew caused by localized dry spots or water channeling.

Daisy-Chain Connectivity
Advanced wiring allows multiple sensor nodes to link in series, simplifying cable management in large-scale commercial cultivation facilities.

Feed on Demand Control
Link sensor data to irrigation schedules to trigger feeding cycles precisely when substrate reaches specific moisture thresholds.
Technical Specifications
| Specification | Value |
|---|---|
| Input Voltage | 12V 0.1A |
| Max Input Current | 0.1A |
| Water Content Range | 0–100% |
| EC Range | 0–30 mS/cm |
| Measurement Range | 32–122°F (0–50°C) |
| Operating Humidity | ≤90%RH |
Support & Manuals
Warranty
This TrolMaster substrate sensor set is covered by a standard manufacturer warranty against defects in materials and workmanship. As an authorized retailer, Trimleaf provides units that ship with a full warranty valid for the original purchaser, ensuring reliable operation in demanding grow environments.
FAQs
The system utilizes multi-point data aggregation to average readings across the medium. This prevents localized anomalies like dry pockets or water channeling from causing false readings or premature irrigation cycles.
Yes, the WCS-9 is fully compatible with the Aqua-X NFS-1 and larger systems like the Aqua-X Plus NFS-3. It connects via the standard RJ12 ports.
The maximum number of units depends on your specific TrolMaster controller capacity. The daisy-chain architecture allows you to scale root zone monitoring across large facilities without individual cable runs for every sensor.
The WCS-9 features a simplified calibration process managed through the TrolMaster app. This allows you to fine-tune accuracy for specific media types, such as rockwool, coco coir, or soil.
Yes, when paired with a compatible controller, the VWC data acts as a trigger for "Feed on Demand" irrigation. Pumps can be activated automatically once the substrate moisture drops below your defined threshold.
Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.