Water Content Sensor with Cable Set

What the WCS-1 Does

The TrolMaster WCS-1 is a three-prong volumetric water content sensor designed specifically for the TrolMaster Aqua-X irrigation control system. The three-prong probe inserts directly into your growing medium — coco coir, rockwool slabs, or soil — and continuously measures the percentage of water and nutrients present in that substrate. Readings are displayed in real time on the sensor's own LCD module, on the Aqua-X controller screen, and through the TrolMaster smartphone app.

Each WCS-1 set ships complete with the three-prong probe, a transfer module (the display screen and addressing button), one RJ12 T-splitter, and a 16 ft RJ12 cable — everything required to connect the sensor into an existing Aqua-X network without additional cable purchases.

Who It's For

The WCS-1 is built for licensed cannabis and hemp operators running coco coir, rockwool, or soil production systems who want to move from fixed-timer irrigation to substrate-condition-triggered watering. If your cultivation team is actively managing dry-back windows, field capacity targets, or vegetative-to-flower crop steering protocols, this sensor is the measurement layer that makes those strategies executable at scale.

The WCS-1 is the entry point into TrolMaster's substrate monitoring ecosystem. Operations already running an Aqua-X (NFS-1) controller can add up to eight WCS-1 sensors per unit, covering multiple zones, tables, or strains simultaneously. When multiple sensors are connected to a single Aqua-X, the controller and app display the average VWC across all connected sensors — a practical check against localized wet or dry pockets skewing irrigation decisions.

Key Features

Real-time display: Substrate VWC percentage is shown live on the sensor module's LCD, on the Aqua-X controller, and in the TrolMaster app — no polling required, no manual readings to log.

App graphing and dry-back visualization: Historical VWC data plots as a graph in the app, allowing cultivation staff to review actual dry-back curves, compare them against target profiles, and adjust irrigation cycle timing accordingly.

Custom alarm thresholds: High and low VWC alarm limits are configurable per sensor. When actual substrate moisture falls outside that window, the app sends a remote notification — catching irrigation failures or runaway over-watering before crop damage occurs.

Addressing button: Each WCS-1 has a dedicated addressing button on the module, allowing multiple sensors on a shared RJ12 bus to be assigned unique identifiers during setup without additional hardware.

How It Fits a Commercial Build

The WCS-1 connects to the Aqua-X (NFS-1) via the included RJ12 cable and T-splitter, daisy-chaining additional sensors along the same bus up to the eight-sensor maximum per controller. The Aqua-X uses the live VWC data to trigger irrigation events when the substrate reaches a defined dry-back threshold — replacing time-based scheduling with condition-based control. This is the core mechanism behind modern crop steering: VWC targets are set differently for vegetative, early flower, and late flower stages to influence whether the plant drives vegetative growth or reproductive output.

For operations running multiple Aqua-X units across a facility, each controller manages its own sensor cluster independently, scaling the approach to rooms, benches, or strains without cross-contamination of data. The WCS-1 operates within a 32–122°F working environment, covering standard commercial grow room temperature ranges, and requires no external power supply beyond the 12 VDC provided by the Aqua-X system itself.