This 10PCS/LOT DC 12V Soil Moisture Sensor Relay Control Module Automatic Watering of The Humidity Starting Switch combines a soil moisture sensor with a relay control module to provide automatic irrigation based on soil moisture levels. The lot includes 10 individual units for multiple projects or replacement needs, all operating at 12V DC. Key benefits Automatic watering driven by soil moisture: The module uses soil moisture readings to trigger a relay that starts irrigation, helping to keep plants at an moisture level without manual intervention. Water conservation and healthier plants: By initiating watering only when needed, it reduces waste and helps prevent overwatering or underwatering. Simple integration with 12V systems: Designed to work with standard 12V power supplies and irrigation devices, making it easy to add automation to existing setups. Flexible for multiple projects: With 10 units per lot, you can outfit several zones, small gardens, pots, or greenhouses from a single . Humidity starting switch functionality: The included humiditybased control provides a straightforward mechanism to start watering when conditions require it. What it does The device combines a soil moisture sensor with a relay control module to automatically drive a water supply when soil moisture is low. The relay acts as a switch to control pumps, valves, or other 12V irrigation devices, enabling automated watering cycles based on soil conditions. It operates on DC 12V, suitable for compatibility with common power sources used in home and hobbyist irrigation projects. Key attributes Functionality: Soil moisture sensing plus relaycontrolled automatic watering for irrigation systems. Compatibility: 12V DC operation; designed to control standard irrigation devices via the relay. Size: Compact module suitable for easy integration into various projects. Material: Specific housing and component materials are not detailed in the product listing. Performance: Reliable relay switching driven by soil moisture readings to enable moistureresponsive watering. Applications and use cases Home garden or potted plant irrigation: Place the sensors in pots or planter beds to automate watering based on soil moisture levels. Greenhouse irrigation control: Manage irrigation zones in a greenhouse, reducing manual monitoring and maintaining consistent moisture. Small lawns or raised beds: Implement moisturedriven watering to keep larger plantings evenly watered with minimal supervision. How to use ( level) Provide a 12V DC power supply to the module. Connect the relay output to the irrigation device (pump or valve) you intend to control. Place the soil moisture sensor in the well or area you want to monitor. The module will actuate the relay to start watering when humidity conditions indicate dry soil. Package includes 10 pieces of DC 12V Soil Moisture Sensor Relay Control Modules with Automatic Watering capability (Humidity Starting Switch) Note Material details are not specified in the product listing. For results, ensure the irrigation device and power supply are compatible with a 12V relay and that the sensor is placed in representative soil for accurate readings.