High quality relay capable of handling up to 1500 W, providing reliable performance for most users. Time delay and humidity control - Includes a time delay of 3-5 seconds to respond to humidity changes. - When air humidity is detected in a critical state, the relay does not blink or exhibit a strobe effect, ensuring stable operation. Durable soil moisture sensing and sensor coating - Uses a high quality soil moisture sensor with a nickel plated surface. - Extends the sensor area to improve sensitivity and reliability. - The nickel plating helps prevent rust from soil contact, extending sensor life. Adjustable soil moisture control - Regulates soil moisture across a wide range. - Threshold is set via a potentiometer for easy customization. - If soil moisture falls below the set value, the relay activates. - If soil moisture rises above the set value, the relay deactivates. Practical use scenarios - Home garden or potted plants: maintain optimal moisture levels automatically to reduce watering frequency and prevent plant stress. - Greenhouse or nursery: steady soil moisture supports delicate crops and improves germination and growth consistency. - Outdoor lawn or garden irrigation: integrates with a watering system to prevent overwatering and conserve water by maintaining the desired moisture point. This product combines a high power relay, a robust soil moisture sensing solution, and an adjustable control threshold to deliver reliable, maintenance-friendly moisture management for a range of applications.