Canopy-level temp, humidity, VPD, PAR light, and CO2 — aspirated, real-time, fully integrated with Growlink OS.
The Growlink ClimaLINK with CO2 (GL-LINK-CLIMATECO2) is a commercial-grade aspirated climate sensor that simultaneously measures temperature, relative humidity, light (lux), CO2 (0–5000 ppm), and automatically calculates VPD — all in real time at the canopy level. Built for multi-room licensed facilities and designed to integrate directly into the Growlink LINKS ecosystem via the canopyLINK hub or LINKS HUB.
The Growlink ClimaLINK with CO2 is a multi-parameter climate sensor purpose-built for commercial indoor and greenhouse cultivation. In a single housing it measures air temperature, relative humidity, ambient light (lux), and CO2 concentration — then uses those inputs to compute and report VPD automatically. Rather than running separate sensors for each parameter, operators get one calibrated instrument positioned at canopy level, eliminating the measurement gaps that come from wall-mounted or remote-placed sensors.
The CO2 module adds the 0–5,000 ppm measurement range needed to dial in supplemental CO2 enrichment programs typical in licensed cannabis rooms running sealed-room HVAC. Pressure compensation is built in, so readings stay accurate at any facility altitude — relevant for operations in mountain-state markets or high-elevation greenhouses.
The ClimaLINK with CO2 targets operators running multi-room or multi-zone licensed cultivation facilities where consistent environmental data is non-negotiable — MSOs, large single-site producers, and commercial greenhouse operators. If your team is managing VPD targets across multiple flower rooms, running CO2 enrichment on a schedule, or trying to standardize environmental conditions across a new expansion, this sensor is the data layer the rest of your HVAC and automation stack depends on.
It is also the correct choice for any Growlink LINKS buildout: the ClimaLINK plugs directly into the canopyLINK hub or the LINKS 8-Port HUB via M8 connector, auto-detects on connection, and appears immediately in Growlink OS with no special addressing required. Facilities already running Growlink irrigation or lighting control can add canopy-level climate data into the same dashboard without adding a separate monitoring platform.
Aspirated design: the ClimaLINK actively circulates air through the sensor housing rather than relying on passive diffusion. In high-canopy-density rooms or sealed environments where air stratification and heat buildup are common, passive sensors can read 2–4°F warmer than actual canopy conditions. Active airflow eliminates that error and keeps readings stable across varying airflow conditions in the room.
The sensor ships with a specialized filter pack that protects internal components against dust and moisture — relevant in rooms running high-humidity VPD targets or facilities with coco/peat-based media that generates particulate. Filter packs are user-swappable in the field, so maintenance does not require pulling the sensor offline or returning it for service. A built-in PAR/lux sensor at the canopy level allows light verification alongside climate data — useful for confirming actual delivered intensity at canopy rather than relying solely on fixture output ratings.
The ClimaLINK with CO2 communicates via SDI-12 protocol over its M8 connector. It connects to the Growlink canopyLINK hub (which accepts up to eight sensors per unit) or directly to a LINKS 8-Port HUB. Both paths feed data into Growlink OS, where the climate readings can trigger automation rules, set alerts, drive HVAC and CO2 enrichment responses, and log to centralized dashboards accessible via the Growlink mobile app or web portal.
For facilities scaling sensor coverage across multiple rooms or zones, multiple canopyLINK hubs can be deployed — each registering as a single device in Growlink OS — allowing sensor density to expand without increasing wiring complexity at the HUB level. This architecture suits multi-room licensed facilities that need zone-by-zone climate data fed into one control platform rather than managing individual room controllers in parallel.
| SKU | GL-LINK-CLIMATECO2 |
| Temperature Range | -40–257°F (-40–125°C) |
| Temperature Accuracy | ±0.18°F (±0.1°C) |
| Humidity Range | 0–100% RH |
| Humidity Accuracy | ±1.0% RH |
| CO2 Range | 0–5,000 ppm |
| CO2 Accuracy | ±3% @ 32–122°F (0–50°C), pressure compensated |
| VPD Output | Calculated automatically (mbar / kPa) |
| Light Measurement | Lux (ambient / PAR canopy level) |
| Communication Protocol | SDI-12 |
| Connector | M8 (4-pin) |
| Included Cable | 5 m M8 cable |
Both options work. The ClimaLINK connects to a Growlink canopyLINK hub (up to 8 sensors per canopyLINK) or to the LINKS 8-Port HUB directly via M8 port. The canopyLINK is the preferred path for multi-sensor deployments since it multiplies available sensor channels and connects to the HUB as a single device — keeping HUB ports available for other LINKS modules.
The CO2 module measures 0–5,000 ppm with ±3% accuracy across 32–122°F (0–50°C). The sensor is pressure compensated, which maintains accuracy at any facility altitude. At a typical cannabis enrichment target of 1,200–1,500 ppm, that accuracy corresponds to roughly ±36–45 ppm — adequate for closed-loop CO2 automation through Growlink OS.
Passive sensors measure whatever air is immediately adjacent to the element. In a warm, dense canopy or near lighting fixtures, that local air can be significantly warmer and more humid than the bulk canopy environment. The ClimaLINK actively draws air through the housing, sampling a continuously refreshed air stream and preventing the heat buildup that makes passive readings unreliable in commercial grow rooms.
Yes. Each canopyLINK hub supports up to eight sensors, and multiple canopyLINK units can be deployed across rooms or zones — each appearing in Growlink OS as a single device. All sensor feeds aggregate into one Growlink OS account, with per-sensor data logging, alerts, and automation rules configurable by room or zone.
Yes. The ClimaLINK uses a user-swappable filter pack to protect against dust and moisture ingress. Replacement frequency depends on the grow environment — dusty media (perlite, coco) or high-particulate rooms will require more frequent changes. Growlink sells replacement filter packs; swapping them does not require tools or taking the sensor offline.
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