AC Infinity Soil Sensor ProbeSoil Sensor Probe Exclusively for Controller AI+, Monitors Moisture and Saturation Levels, IP67 Water Resistant A soil meter designed specifically for AC Infinity AI Controllers to help monitor and maintain soil saturation. Enables your controller to activate water devices with advance controls and send alerts through the AC Infinity app. Detachable stem enables secure sensor placement deeper in soil. IP67 rated for sealed protection against liquids