

Soil Moisture Sensor Module
The Soil Moisture Sensor Module helps you easily monitor when your plants need watering, whether in a pot, garden, or yard. Its two metal probes act as variable resistors, detecting the soil’s moisture level by measuring electrical resistance.
When the soil is wet, it conducts electricity better, resulting in lower resistance and a higher moisture reading. Conversely, dry soil conducts poorly, producing higher resistance and a lower moisture reading.
This sensor is ideal for home-automated watering systems, IoT projects, or simple plant care monitoring. With just a quick installation, you’ll be on your way to smarter gardening and healthier plants.
Wiring Connection
VCC: 3.3V-5V
GND: GND
DO: Digital output interface (0 and 1)
AO: Analog output interface
Features :
Dual output mode, analog output more accurate
A fixed bolt hole for easy installation
With power indicator (red) and digital switching output indicator (green)
LM393 comparator chip, stable.
Package Includes :
1 x Soil Moisture Sensor Kit