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AC Infinity Smart Controllers

AC Infinity Smart Controllers are the climate hubs that coordinate inline fans, LED lights, humidifiers, dehumidifiers, and CO2 valves on one closed-loop schedule. Four tiers cover most builds: the Fan Controller 63 (single-fan wireless remote), the Smart Controller 69 Pro (8-port UIS hub), the 69 Pro Plus (8-port hub plus Wi-Fi and a temperature/humidity sensor probe), and the Controller AI+ (AI-driven adjustments with an optional CO2 sensor). All Smart Controllers use AC Infinity's UIS protocol, so any UIS-compatible accessory auto-detects when plugged in. The decision points are how many devices the build runs, whether closed-loop sensor control is needed, and whether Wi-Fi access is required.

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Buyer's Guide

AC Infinity Smart Controllers: Complete Guide

How the Smart Controller Lineup Is Organized

The AC Infinity Smart Controller is what turns the rest of the ecosystem into a closed-loop climate system. Every UIS-compatible fan, light, humidifier, dehumidifier, heat mat, and CO2 valve plugs into the controller, which then runs them off real-time temperature, humidity, and VPD sensor data instead of fixed schedules. The four tiers differ in port count, sensor capability, and Wi-Fi access.

Controller Tier Reference

Tier Ports Wi-Fi + App Best For
Fan Controller 63 1 (single device) No (wireless remote) Single Cloudline fan
Smart Controller 69 Pro 8 UIS No Closed-loop without app
Smart Controller 69 Pro Plus 8 UIS Yes + sensor probe Full single-tent closed loop
Controller AI+ / AI+ with CO2 8 UIS + leaf probe Yes + AI adjustments Advanced VPD + CO2 control

Which Controller for Which Build

The Fan Controller 63 is the right call if the only automation you need is a wireless speed dial for a single Cloudline. The Smart Controller 69 Pro is the entry point for closed-loop control on the included temperature/humidity sensor, running up to 8 UIS devices on the same schedule. The 69 Pro Plus adds Wi-Fi and a remote sensor probe, which is the version I'd default to for most single-tent builds since the app gives you remote scheduling, historical climate logs, and push alerts. The Controller AI+ is the upgrade for advanced users who want leaf-zone temperature tracking and AI-driven VPD adjustments, or for CO2-supplemented rooms when paired with the CO2 sensor add-on.

If you're cross-shopping against a higher-end commercial system, the Trolmaster vs. AC Infinity comparison breaks down where each ecosystem makes sense.

Related Guides

Smart Controllers integrate with Cloudline inline fans for closed-loop ventilation. For cross-brand controller options including TrolMaster Hydro-X and the higher-end Pulse Pro, the broader grow room controllers page lines up the full lineup.

Frequently Asked Questions

What does UIS mean?
UIS stands for Universal Infinity System. It's AC Infinity's proprietary protocol that runs over RJ-style connectors, used to link the Smart Controller with compatible fans, lights, humidifiers, dehumidifiers, heat mats, and CO2 valves. UIS-compatible devices auto-detect when plugged in, so you don't need to manually configure each one.
69 Pro vs 69 Pro Plus, what's the difference?
Both have 8 UIS ports and run closed-loop climate control. The 69 Pro uses the built-in display and dial for scheduling, no Wi-Fi. The 69 Pro Plus adds Wi-Fi for the AC Infinity app (remote scheduling, alerts, climate logs) plus a separate sensor probe so the sensor can be placed at canopy level instead of on the controller body.
Does the Controller AI+ replace the 69 Pro Plus?
It's a step up rather than a replacement. The AI+ adds a leaf-temperature probe (which lets it track leaf-zone VPD rather than room VPD) and runs AI-driven adjustments based on phase of growth and historical sensor data. For most single-tent home grows, the 69 Pro Plus is enough. The AI+ pays back on advanced grows where leaf VPD targeting and CO2 supplementation matter.
Can the Controller AI+ control non-AC Infinity gear?
Only AC Infinity UIS-compatible devices plug directly into the controller. For non-UIS gear, AC Infinity sells outlet adapters that let the controller switch any 120V AC device on or off on a schedule, but those devices won't get variable-speed or dimming control, only on/off.
Does the Smart Controller need Wi-Fi?
No. The 69 Pro runs entirely from the on-controller display and dial without Wi-Fi. The 69 Pro Plus has Wi-Fi for app access, but the controller still runs the schedule locally if Wi-Fi drops. Wi-Fi is required for remote control and historical logging, not for the closed-loop schedule itself.
How many devices can the 69 Pro Plus handle?
8 UIS ports, each handling one UIS-compatible device. A common single-tent setup uses 5-6 ports: inline fan, intake fan, LED, humidifier, dehumidifier, and one open port for a heater or CO2 valve. For a 2-tent build, the 69 Pro Plus still works but you'll need to combine the fans and lights from both tents onto the same 8 ports.
What sensors does the Controller AI+ use?
Temperature, humidity, ambient VPD, and leaf-zone temperature via an infrared leaf probe. The AI+ with CO2 sensor adds a CO2 ppm sensor for supplemented rooms. Combined, those sensors drive AI-adjusted setpoints that change through veg, flower, and ripening phases without manual tweaks.
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