Link4 Modbus Substrate Sensor
The Link4 Modbus Substrate Sensor gives you real-time data on temperature, humidity, conductivity (EC), pH, and NPK, right in the growing media. Get clear, accurate information that helps you irrigate smarter, protect your crop, and cut down on waste.
- ROne Probe. Seven Parameters.
- RBuilt for Commercial Growing
- RPlugs Right Into Your Link4 System
- RCloud-Connected
Why Root Zone Data Changes Everything
- Irrigate based on actual moisture
- Catch nutrient buildup early
- Keep root temps stable and react in seconds
Built Tough for Commercial Growing Conditions
- IP68 waterproof
- Power input: 4.5–30V DC
- Works in peat, coco, rockwool, perlite blends, and mixed media
Simple Modbus RS485 Integration
- Plug directly into Link4 controllers
- Daisy-chain multiple sensors on one bus
- Compatible with most third-party SCADA and greenhouse management systems
Local Display & Data Logging
For on-site visibility and standalone monitoring, the sensor can connect to a dedicated Human-Machine Interface (HMI) display.
- Live on-site display → instant sensor readings & graphs
- Store and export data to an SD card
- Adjust readings without a computer
Specs That Drive Better Growing
Built to measure what matters: accurate, real-time data from the root zone.
- EC range up to 20,000 µS/cm
- Moisture range 0–100%
- Temperature range -40°C to 80°C
- pH range 3–9
- NPK range 1–2999 mg/kg
- Low power: 0.5W
- 2 m cable length
Link4 Cloud Connectivity
Unlock advanced irrigation control with smart automation tools with the Link4 Cloud.