Precision that powers growth
Upgrade your GGS setup with a CO₂ sensor and PPFD (PAR) meter. Together with Temp/RH/VPD you get the data to tune light, CO₂, and climate—so plants photosynthesize efficiently and grow consistently, day after day.
Selected by Stockholm Reptiles – Why we chose it
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Truly data-driven: PPFD + CO₂ + VPD makes dialing in targets straightforward. 
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Faster optimization: Find the right light height and CO₂ level for each stage. 
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Plug-and-play in the GGS ecosystem: Replaces the light/day-night probe in GGS kits and AC5/AC10. 
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Better yield potential: CO₂ enrichment with high PPFD can drive faster growth and higher yields. 
What you can do
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Measure PPFD at canopy — set lamp height accurately and avoid hotspots. 
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Control CO₂ with confidence — track levels over time and sync with light schedules/dimming. 
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Fine-tune the climate — combine with Temp/RH/VPD for stable conditions. 
Recommended PPFD levels
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Seedlings: 100–300 µmol/m²/s 
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Vegetative: 400–600 µmol/m²/s 
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Flowering: 800–1000 µmol/m²/s 
Compatibility
In the box
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1× Temp/Humi/VPD/PPFD (PAR) Meter 
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1× CO₂ Meter 
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RJ12 cables: 2× 2.5 m + 1× 0.25 m 
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2× RJ12 splitters 
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1× Bracket for the PAR meter 
When to choose SensorPro
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You run high PPFD and plan CO₂ enrichment. 
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You want correct lamp height and fewer hotspots. 
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You need data to drive faster growth and yield. 
Using the PPFD (PAR) meter
Recommended PPFD levels
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Seedlings: 100–300 µmol/m²/s 
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Vegetative: 400–600 µmol/m²/s 
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Flowering: 800–1000 µmol/m²/s 
CO₂ guidelines & safety
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Typical targets: 800–1200 ppm in sealed, high-PPFD setups. 
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Run CO₂ only while lights are on; ventilate between cycles. 
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Follow safety instructions for CO₂ in enclosed rooms. 
Swapping probes in GGS
Replace the Temp/RH/Light probe with the Temp/Humi/VPD/PPFD probe and add the CO₂ sensor. Everything connects via RJ12 (plug-and-play).
Common mistakes (and fixes)
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High PPFD without CO₂ → lower PPFD or raise CO₂ in a controlled way. 
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Uneven PPFD → measure more points; even out fixture distance/angle. 
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No day/night after upgrade → PPFD probe lacks side light sensor; set day/night in the schedule. 
Pre-order
High demand—pre-order now. Estimated shipping Oct 8–15.