The relay module acts as a switch that allows the Arduino (low power device) to control high-power devices like water pumps. When Arduino detects dry soil, it activates the relay, which in turn powers the motor pump to water the soil.
⚡ Safely switches high-power devices with low voltage signals
🔌 Works with AC or DC loads
🛡️ Provides electrical isolation to protect Arduino
🔧 Use Cases: Home automation, robotics, IoT appliances, smart farming systems
