5V DC soil moisture sensor relay module for automatic irrigation - Function: Monitors soil moisture and automatically activates a connected valve or pump when moisture falls below a threshold, reducing water waste and preventing over- or under-watering. - Reliable control: Moisture sensing input paired with a relay output to drive irrigation devices; clear, dependable switching from a 5V control signal. - Compatibility: Designed for 5V systems; easy to integrate with common microcontroller projects such as Arduino and ESP variants; relay isolates the irrigation device from the controller. - Size and material: Compact form factor suitable for control boxes and small projects; standard PCB module with durable components. - Performance: Sensitive moisture detection with stable operation and quick relay response to moisture changes; low standby current. - Use scenarios: 1) Indoor herb garden or potted plants: keeps soil evenly moist by auto-watering when dry. 2) Raised beds or drip irrigation: zones controlled by a central controller for water efficiency. 3) Greenhouse seedling trays: maintains consistent moisture for young plants.