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Soil Moisture sensor are specifically designed to detect the amount of moisture or water soil contains. It uses capacitance to measure the dielectric constant of the soil. Dielectric constant can be called as the ability of soil to transmit electricity. The soil increases as the water content of the soil increases. Dielectric constant of water is more than any other soil component, that is why soil sensor uses that factor for moisture detection. The sensor creates a voltage proportional to the dielectric permittivity, and therefore detects the water content of the soil.


Soil Moisture Sensor have many applications in different areas like Agriculture Department, Landscape Irrigation, Gardening purpose


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