Feature
●High quality soil moisture sensor has 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
●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
Description
Product Display
Specifications:
- Power Supply Voltage: 12VDC
- Input Voltage: >100mA
- Load Capacity: 250V 10A AC or 30V 10A DC
- Maximum Load Power: 1500W
- Module Size: 1.7*5*2.5cm/0.67*1.97*0.98in
Package Includes:
- 1 x Module
- 1 x Sensor
- 2 x Cables
Normally open terminal circuit connection method
The function of the connection method in the above figure is that when the relay is not closed, the common end is connected to the normally closed end, which is equivalent to the switch is disconnected, and the control device does not work without power. When the relay is closed, the common end is connected to the normally open end. It is equivalent to the switch is turned on, and the device works a bit.
Connection of normally closed circuit
The function of the connection method in the above figure is that when the relay is not closed, the common terminal is connected to the normally closed terminal, which is equivalent to the switch is closed, the circuit is connected, and the control device will be powered. When the relay is closed, it is equivalent to the switch is disconnected, and the circuit does not work without power.