DC 12V Soil Moisture Sensor Relay Control Module Hygrometer Measure Tools Automatic Watering Humidity Starting Switch

Features: This module can control humidity of soil in a wide range and set control threshold by adjusting potentiometer. When humidity is lower than the set value, relay is energized; when humidity is higher than the set value, relay is dis-energized. High quality soil moisture sensor has nickel plating surface, widened induction area, can improve conductive performance and prevent rust problem when contact with the soil to prolong service life. It has time delay function, delay 3-5 seconds, when humidity is detected in the threshold state, the relay will not flicker. Adjusting soil moisture control threshold by potentiometer (clockwise to increase, counterclockwise to reduce), it can control soil humidity and automatically watering vegetable garden, flower garden or pot. Because this module has time delay function, when adjusting humidity, you need to wait for 5 to 8 seconds to check the change of relay, and the green LED lights will change, until it is adjusted as required. Specifications: Power Supply Voltage: 12VDC Input Voltage: >100mA Load Capacity: 250V 10A AC or 30V 10A DC Module Size: 1.7*5*2.5cm/0.67*1.97*0.98in Package Included: 1 x Module 1 x Sensor 2 x Cables

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