The Controller AI+ already covers temperature, humidity and VPD on its own. Each of these add-ons gives it a signal it can't otherwise see, and which one is worth adding depends entirely on how you grow.
Supplementing CO2? The CO2 & Light Sensor tracks ppm levels and triggers fresh-air exchange automatically when they climb too high, and its light sensor lets you tie automations to your day/night cycle instead of a fixed clock.
Growing in soil or coco? The Soil Sensor (IP67-rated) reads moisture and saturation directly from the medium, so you're watering on what the roots are actually experiencing rather than guessing by pot weight or a finger test, a common source of over and under-watering.
Worried about a leak near your electronics? The Water Sensor (IP68-rated) sits wherever moisture shouldn't be, under a reservoir or on the tent floor, and flags the presence of liquid before a slow drip becomes a flood.
Running hydro or DWC? The Hydro Sensor reads pH, EC, TDS and water temperature straight from your reservoir, and its probes are interchangeable, so a worn probe means a quick swap, not a whole new sensor.
Covering a bigger or multi-zone tent? The Climate Sensor adds a second temperature and humidity reading point, so your controller isn't making decisions for the whole space based on one corner.
Soil and coco growers usually see the fastest payoff from the Soil Sensor. Hydro and DWC growers get more value from the Hydro Sensor's pH, EC and TDS tracking. If you're running CO2 enrichment, start with the CO2 & Light Sensor.
These add-ons only work with the Controller AI+, they aren't compatible with the Controller 69 Pro range.
Be the first to ask a question about this.
YOUR LOCAL HYDROPONICS EXPERT
Covering the Midlands, Bristol and London, whichever of our shops you visit, we can guarantee you'll get the best price and unbeatable advice from our expert staff.
