Products
CO₂ Sensor
Greenhouse CO₂ enrichment and ventilation automation
The Farmnet CO₂ sensor measures ambient CO₂ concentration and feeds data directly into HOSMART and HOSMART-LINK climate controllers for automated enrichment and ventilation decisions — optimising photosynthesis and air quality without manual intervention.
our core strengths
Proven at Scale, Built for Performance
Farmnet manages the variables that determine crop consistency and operational efficiency. Systems are deployed across greenhouse, open-field, and indoor production environments, providing real-time control of temperature, humidity, CO₂, water delivery, and nutrient dosing.
Operating at national scale within the world's largest agricultural economy. Farmnet systems support dense networks of greenhouse and open-field operations across the highest-intensity production regions.
End-to-end production capability. Controllers, fertigation units, and system components are designed, produced, and validated within Farmnet's dedicated industrial facilities.
More than a decade of continuous development in agricultural control systems, refined through multiple technology generations and operational requirements.
Multidisciplinary engineering organisation focused on agricultural automation, control architecture, hardware design, and software systems.
Systems operating across diverse climates and production models—from arid environments to advanced controlled-environment agriculture.
Thousands of systems in continuous 24/7 operation, generating long-term performance data that informs system reliability and design.
Technical Specifications
- Measurement range
- 0–2,000 ppm CO₂
- Output
- Real-time signal to HOSMART / HOSMART-LINK
- Integration
- HOSMART, HOSMART-LINK, Farmnet Platform
- Automation
- CO₂ enrichment + ventilation control
- Installation
- Indoor mounting at canopy level
Key Features
Direct climate controller integration
Sensor output connects to HOSMART inputs — CO₂ setpoints control injection valves and ventilation automatically.
Enrichment and ventilation automation
When CO₂ drops below setpoint, injection activates. When it rises above ventilation threshold, roof vents open — no manual monitoring required.
Photosynthesis optimisation
Maintaining 600–1,200 ppm CO₂ in the canopy zone consistently improves crop growth rate and yield without additional inputs.
Ecosystem
Works Together With
Climate Controllers
Direct signal input to HOSMART and HOSMART-LINK for CO₂-driven automation.
Learn MoreFarmnet Platform
CO₂ trend monitoring, setpoint history, and enrichment event logging.
Learn MoreApplications
Where It's Used
Greenhouse CO₂ enrichment
Vegetable and ornamental greenhouses using CO₂ enrichment to improve growth rate and reduce time to harvest.
Ventilation management
CO₂-triggered vent opening to maintain air quality in high-density growing environments.
Next Step
Automated CO₂ management for your crop.
Tell us your greenhouse size and climate controller model. We'll confirm the right CO₂ sensor setup.