Soil Moisture Sensor Module (YL-69 Probe + FC-28 Comparator Module)

The Soil Moisture Sensor Module consists of a corrosion-resistant moisture sensing probe and a comparator control board. The probe measures the conductivity of the soil, which varies according to its moisture level. The control board processes this signal and provides both analog and digital outputs for easy interfacing with microcontrollers.The module features an adjustable sensitivity potentiometer that allows users to set the moisture threshold for digital output triggering. When the soil becomes dry or reaches a preset moisture level, the module can activate alarms, relays, pumps, or irrigation systems.This sensor is widely used in automatic irrigation systems, smart farming applications, greenhouse monitoring, home gardening, and IoT-based environmental monitoring projects.