GS-SUB · Substrate probe
SubSense Substrate Sensor
The Grow Sensor root-zone probe. Water content, EC and temperature in the media, for crop steering.
$259
Pay in 4 interest-free instalments of $64.75 withshopPay
1
- 60-day money-back guarantee
- 2-year warranty
- Ships to UK, EU, US, CA, AU, NZ
Technical specification
Accuracy, published.
Sensing
- Water content
- 0–100 % VWC, ±1.8 % (0–50 %)
- Pore water EC
- 0–20 dS/m, ±5–10 %
- Substrate temperature
- −40–85 °C, ±0.5 °C
Interface & power
- Output
- SDI-12 (v1.3)
- Cable
- 3 m, waterproof
- Power
- 3.6–16 V DC, 30 µA quiescent
- Protection
- Reverse polarity + surge (TVS/ESD)
Media
- Substrates
- Soil, coco, rockwool, hydro media, mineral
- Installation
- Buried or container setups
Compatibility
Works with what you run.
Designed for the Grow Sensor PRO; the readings land in the same app as the canopy channels.
Integrations
- Connects to the Grow Sensor PRO via the waterproof RJ12 connector block
- Works with other SDI-12 compatible logging systems
FAQ
Before you order.
Both read water content, EC and temperature into the same app. Most rooms take SubSense, the default in the complete system. SOLYX 14 still does the same job, with the edge in extreme high-EC conditions.
Placement depends on pot size and irrigation layout. The installation guide on our FAQ site walks through positioning for each pot size.
One probe connects at a time today. Support for multiple probes per unit is in development.
60-day money-back guarantee and a 2-year warranty, same as every Grow Sensor product.
GS-SUB · Substrate probe
SubSense Substrate Sensor
60-day money-back guarantee. 2-year warranty. Ships to UK, EU, US, CA, AU, NZ.
$259



