CO2 and light sensor module for the AC Infinity Controller AI+ front view
Sensor plugged into the Controller AI+ sensor port
Sensor positioned at canopy height inside a grow tent
App readout showing CO2 and light level data from the sensor
Close-up of the sensor housing and cable

CO₂ + Light Sensor for Controller AI+ by AC Infinity – Smart Grow Optimiser

AC‑COS3

Regular price$105.00
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Shipping calculated at checkout.

  • Handpicked by growers
  • Ships today
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  • 5,000+ high yielding customers
  • 30-day returns*
  • Free shipping over $499*
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Your plants just got smarter

Dial in your grow room like a pro with the AC Infinity CO₂ + Light Sensor. Designed exclusively for AI+ Controllers, this beauty doesn't just measure air - it thinks. It tracks CO₂ levels and light intensity in real time, then tells your controller when to kick fans on, schedule CO₂ bursts, or chill out for the night. It’s like giving your plants their own climate butler.


🔹 Key Features

🧠 Adaptive CO₂ and light monitoring with automated decision-making

💨 Smart fan + CO₂ control based on real-time PPM readings - no waste, all growth

🌗 Day/night scheduling + precision cycling to optimise every hour of your grow

📱 Syncs with AC Infinity’s Wi-Fi app for real-time tracking and control

📏 Massive detection range: CO₂ (0–40,000 ppm), light (1–65,535 lux)


🛠️ How to Use It

  • Plug directly into your AI+ Controller - it syncs instantly

  • Place in your grow space near canopy height for best CO₂/light readings

  • Use the app to set day/night cycles, minimum intake speeds, and fresh air exchange logic

  • Watch as your fans, CO₂ gear, and airflow adjust themselves automatically - no micromanaging needed


🌟 Grow Guys Tips

  • Use this with your CO₂ tanks or bags to make sure you’re not just pumping gas for no reason

  • Combine with AC Infinity’s exhaust/intake fans for fully automated FAE (Fresh Air Exchange)

  • Adjust day/night lighting thresholds to match your lighting gear for precise scheduling

  • If you’re chasing yield, stable CO₂ around 1200–1500 ppm can make a massive difference


🧃 Perfect For

  • Growers running sealed or semi-sealed indoor environments

  • CO₂-enriched grow rooms with tight control on PPM

  • LED or HPS setups needing consistent photoperiod regulation

  • Smart growers who want full data feedback and automation


📦 Specs & Stuff

  • Model: AC-COS3

  • Dimensions: 1.41 x 2.83 x 0.55 in (3.6 x 7.2 x 1.4 cm)

  • Cord length: 144 in (365.8 cm)

  • Detection:

    • CO₂: 0–40,000 ppm (±50 ppm, ±5%)

    • Light: 1–65,535 lx (accuracy 1.2 lx)

  • Response time:

    • CO₂: 60 seconds

    • Light: 120 milliseconds

  • Operating temp: 32°–122°F

  • Humidity: 35%–60% RH


🚀 Give your grow the brains it deserves

Set it. Sync it. Forget it. This CO₂ + Light Sensor lets your setup make the smart calls, so you can focus on growing the good stuff. Chuck it in your cart and let the automation do the rest.

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Growers First, Retailers Second

Welcome to The Grow Guys

We built The Grow Guys from the soil up — well, coco and perlite. Before we sold gear, we bought it, ran it, and learned the hard way what's worth the money and what ends up in the shed. That's the filter everything on our shelves passes through. No sales scripts, no rebadged junk, no telling you what you want to hear. Just gear we'd run ourselves and advice from people who actually grow. Chasing higher yields, tighter flowers, or your first harvest? You're in the right place.

FAQs

Order by 2pm and it ships the same business day from Invermay, Tasmania.

Calculated at checkout by weight and destination. Free shipping over $499*.

Plain packaging, no branding. No one knows what's in your box.

30-day change-of-mind returns on unopened, unused products. A 10% restocking fee applies and return shipping is at your cost.

Call, email, or walk into the Invermay shop. You'll get a grower on the other end, not a script.

Unit 10/110 Gleadow Street, Invermay 7248. Mon–Fri 8:30am–5:30pm, Sat 9am–3pm.


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