Trolmaster WCS-3 Wired Water Content Sensor – Substrate Moisture Sensor for Crops
Trolmaster WCS-3 Wired Water Content Sensor – Substrate Moisture Sensor for Crops
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Measurement: volumetric water content VWC 0-100% in substrate.
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Design: 3 ultra-thin prongs for soil, coco or rockwool.
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Connection: Daisy-chain up to 50 sensors on Aqua-X Pro/Hydro-X Pro.
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Includes: WCS-3 sensor, M12 T connector and 1.2 m M12 cable.
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Description
- 💧 VWC Measurement: Real-time substrate volumetric water content from 0 to 100%.
- 🌱 3 ultra-thin prongs: Inserts into soil, coco, or rockwool without damaging the roots.
- 🔗 Daisy chain connection: Up to 50 sensors on the Aqua-X Pro NFS-2 or Hydro-X Pro with an M12 connector.
- 🖥️ Motion-activated LCD: The screen activates as you approach and instantly displays the reading.
The TrolMaster WCS-3 sensor measures the actual substrate moisture so you only water when necessary.
Full description
TrolMaster WCS-3 — Substrate Water Content Sensor with LCD
The TrolMaster WCS-3 measure the volumetric humidity percentage (VWC 0-100%) directly into the substrate. With a motion-activated LCD screen and ultra-thin 3-prong design, it inserts without damaging the roots into soil, coconut or rock wool. Daisy-chain connection for up to 50 sensors on Aqua-X Pro or Hydro-X Pro.
Compatibility
- Aqua-X NFS-1: up to 8 Aqua-X Plus NFS-3: up to 20 Aqua-X Pro NFS-2 / Hydro-X Pro: up to 50 Tent-X: 1
Specifications
- VWC range: 0-100% · Voltage: 12V DC · Temperature: 0-50°C · Humidity: ≤90%
- Includes: WCS-3 sensor + M12 T connector + 1.2m M12 cable
Warranty
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Every item goes through a check before shipping to make sure it arrives in perfect condition and ready to use.
Your satisfaction is our priority.
How to use
1. Insert the 3 prongs of the WCS-3 into the substrate (soil, coco, or rockwool) until they bottom out.
2. Connect the 1.2m M12 cable to the M12 T-connector and link it to the TrolMaster controller.
3. Set the irrigation activation VWC percentage in the Aqua-X or Hydro-X Pro.
4. Tap or move the sensor to activate the LCD screen and view the current moisture value.
5. Connect more WCS-3 sensors in a daisy chain to cover different areas of the crop.
6. Adjust the irrigation cycles in the controller based on the real-time VWC data.

Trolmaster WCS-3 Wired Water Content Sensor – Substrate Moisture Sensor for Crops
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Frequently asked questions
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It's a sensor that measures the volumetric water content percentage (VWC 0-100%) directly in the substrate. It includes a motion-activated LCD screen to check the readings instantly.
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It works in soil, coco and rockwool. Its ultra-thin 3-prong design allows it to be inserted without damaging your plants' roots.
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It depends on the controller: up to 8 on the Aqua-X NFS-1, up to 20 on the Aqua-X Plus NFS-3, up to 50 on the Aqua-X Pro NFS-2 or Hydro-X Pro, and 1 on the Tent-X. The daisy-chain connection makes it easy to link several sensors in the installation.
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It includes the WCS-3 sensor, an M12 T-connector and a 1.2-meter M12 cable. With this you have everything you need to integrate it into your TrolMaster system.
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It measures VWC from 0 to 100%, runs on 12V DC, works at temperatures from 0 to 50°C and in ambient humidity of up to 90%. It's a sensor designed for continuous operation in grow rooms.
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You can pay securely by card, Bizum or PayPal, and you can also split the payment with Klarna or ViaBill. In stock, orders placed before 2:00 p.m. ship the same business day and arrive 1 to 3 business days later; you'll see the estimated delivery date on the product page.