Water Content Sensor 3 with splitter cable set

Track Volumetric Water Content Right at the Sensor

The TrolMaster WCS-3 is a 3-prong volumetric water content sensor designed to measure the moisture level of your grow medium as a percentage, whether that's coir, soil, or rockwool.

A built-in LCD display sits on one side of the sensor and becomes active when the sensor is shaken or disturbed, showing the current VWC% reading directly on the device.

The WCS-3 is compatible with the Aqua-X, Aqua-X Plus, Aqua-X Pro, Hydro-X Pro, and Tent-X control systems, with connection limits that vary by controller.

Key Features & Benefits

• Tap-to-Wake LCD — Shows live VWC% readings right on the sensor body.
• Ultra-Slim Design — Compact form factor for easy placement in the grow medium.
• Daisy-Chain Ready — Built for connecting multiple sensors in sequence.
• Mobile Alerts — Sends notifications when readings exceed your set thresholds.

Who Should Use the WCS-3

Growers practicing crop-steering irrigation, or anyone who wants a quick, real-time moisture reading without pulling up the controller display, will find the WCS-3's on-sensor LCD especially useful.

Connection Limits by Controller

Up to 50 WCS-3 sensors can connect to the NFS-2 or HCS-2 controllers, 20 to the NFS-3, and 8 to the NFS-1, while the TCS-1 controller supports only a single WCS-3.

Frequently Asked Questions

Which controllers work with the WCS-3?

The Aqua-X, Aqua-X Plus, Aqua-X Pro, Hydro-X Pro, and Tent-X systems.

How many WCS-3 sensors can I connect to a TCS-1?

Only one WCS-3 can be connected to the TCS-1 controller.

How do I check a reading on the sensor itself?

Shake or disturb the sensor and the LCD display will wake to show the current VWC% reading.

What's included with the WCS-3?

A water content sensor, an M12 T-splitter, and a 4 ft M12 cable.