The Soil Sensor for Your Root Zone

All-in-One Greenhouse Soil & Climate Sensor

The world’s first wireless substrate sensor that correlates Substrate, Microclimate, and Light data to perfect your irrigation strategy.

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Sigrow Soil Pro+ – all-in-one greenhouse soil and climate sensor for substrate EC, moisture, and microclimate monitoring
  • Sun
  • Air
  • Substrate
  • Light Active
  • Climate Active
  • Substrate Active

Moisture Data Without Context is Just a Number

Don’t guess your irrigation decisions. Standard sensors only tell part of the story.

Root zone blind spot – standard sensors miss critical soil substrate data

The Blind Spot

Standard sensors tell you how much water is in the slab, but not why the plant needs it.

Disconnect between climate and substrate – greenhouse irrigation control gap

The Disconnect

Irrigation decisions often ignore the microclimate and light levels driving transpiration.

Risk of crop damage from unmonitored soil conditions in greenhouse

The Risk

Over-watering leads to root rot; under-watering kills momentum.

Standard Sensor

Limited Data

  • Moisture only
  • No light data
  • No climate data

VS

Soil Pro+

Complete Intelligence

  • Substrate (WC, EC, Temp)
  • Light (PAR intensity)
  • Microclimate (T, RH, VPD)

3 Critical Metrics. 1 Device.

Don’t guess your irrigation decisions. A standard moisture sensor only tells part of the story.

Hover over the device to explore each sensor area

Solar Drive (PAR Light)

Measure the energy driving your plant’s thirst. Monitor photosynthetically active radiation to understand plant demand.
PAR Light Intensity Daily Light Integral (DLI) Real-time Light Tracking

Microclimate Context (T, RH, VPD)

Understand the air layer right above the pot. Track temperature, relative humidity, and vapor pressure deficit.
Air Temperature Relative Humidity (RH) Vapor Pressure Deficit (VPD)

Calibrated Substrate (EC, WC, Temp)

The built-in EC sensor and moisture sensor unlock the secrets of your root zone. Precisely measure electrical conductivity, water content, and temperature — the most complete root zone sensor on the market.
Water Content (WC) Electrical Conductivity (EC) Substrate Temperature

Soil Pro+ is the only root zone sensor that correlates substrate VWC, EC, substrate temperature, air temperature, relative humidity, and PAR in one device.

Steer Your Crop with Confidence

Watch how substrate VWC, EC, and temperature respond in real time as PAR and microclimate shift. That is irrigation steering based on cause and effect, not a timer.

Real-Time Cause & Effect Analysis

This proves the “Cause and Effect” capability of the sensor

Real-time cause and effect analysis – light drives water demand in greenhouse substrate

Light Drives Demand

As PAR light increases, plants transpire more, pulling water from the substrate. This creates the dry-back effect.

Perfect Your Timing

Monitor the inverse relationship to optimize irrigation timing and prevent stress before it impacts yield.

Works With Your System

Seamlessly integrates with major climate computers and the Sigrow dashboard.

  • Priva
  • Hoogendoorn
  • Source
  • Ridder
  • Sigrow Dashboard

Wireless Connectivity

Connect via LoRa technology through the Sigrow Gateway. No cables, no hassle.

Your Data, Your Way

Export to your preferred platform or view in our intuitive Sigrow dashboard.

Built for Reliability

Compatible greenhouse substrates – rockwool, coco, perlite, and soil

Substrates

Rockwool, Coco, Soil, Perlite

Solar-powered operation – no cables needed for Soil Pro+ sensor

Power

Solar (Self-sustaining)

Wireless LoRa connectivity – Soil Pro+ greenhouse data transmission

Connectivity

Wireless (LoRa / Sigrow Gateway)

Low-maintenance greenhouse sensor design – Soil Pro+ reliability

Maintenance

Zero calibration needed

Measurement Range

  • WC: 0-100%
  • EC: 0-20 mS/cm
  • Temperature: -10 to 60°C
  • PAR: 0-2000 μmol/m²/s

Accuracy

  • WC: ±2%
  • EC: ±5%
  • Temperature: ±0.5°C
  • RH: ±3%

Data Transmission

  • Frequency: Every 5 min
  • Range: Up to 500 m
  • Protocol: Private LoRa
  • Battery life: 5+ years

Frequently Asked Questions

Soil Pro+ measures six variables in one device: substrate water content (VWC), electrical conductivity (EC), substrate temperature, air temperature, relative humidity, and PAR light intensity. It also calculates daily light integral (DLI) and VPD from these readings.

Soil Pro+ is calibrated for rockwool, coco, soil, and perlite. The substrate pins sit directly in the growing medium, so the readings reflect what is happening at root level — not an estimate from a nearby drip line or drain tray.

Soil Mini is a portable spot-check sensor designed to map variation across a greenhouse — dry zones, hot spots, inconsistent irrigation. Soil Pro+ is a fixed, always-on substrate sensor that correlates root-zone moisture, EC, and temperature with the microclimate and light driving plant demand. Use Mini to find problems; use Pro+ to steer irrigation continuously.

Yes. Soil Pro+ integrates with Priva, Hoogendoorn, Ridder, and other climate computers via API. Data flows into your existing dashboard — no rip-and-replace required.

Soil Pro+ shows how substrate VWC, EC, and temperature respond in real time as PAR and microclimate shift. Because the air sensor sits on top and the soil pins go into the substrate, you see both the cause (light, humidity, temperature) and the effect (moisture uptake, EC drift) in one view. That is irrigation steering based on cause and effect, not a timer.

Ready to reveal the power of your climate data?

Join leading growers who are preventing disease and optimizing yields with Soil Pro+’s substrate intelligence.

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Questions, assistance, or just want to chat – reach out!

+31 6 450 500 55success@sigrow.comWhatsApp

Sigrow greenhouse monitoring camera and sensor technology