The soil sensor package integrates multiple high-performance sensors, including the industry’s first-ever nine-electrode EC sensor that measures the electrical conductivity of pore water and comes equipped with original algorithms that enable a separate measurement of only the amount of fertilizer and a moisture sensor that is mostly free from the impact of temperature and ions. With its robust structure and quality that tolerates outdoor usage environment, the soil sensor can be used for a wide range of applications, including the monitoring of temperature, moisture, and fertilizer in the soil for agricultural purposes, irrigation systems, and monitoring and control of the water quality of lakes and rivers.