The soil NPK sensor is suitable for detecting the content of
Nitrogen
Phosphorus
Potassium 
Soil humidity
Temperature
Electrical Conductivity
SOIL PH
and judging the fertility of the soil by detecting the content of N, P, and K in the soil. The 5 PIN stainless steel probe of the soil npk sensor can be buried in the soil for a long time and is resistant to long-term electrolysis, salt, and alkali corrosion. The shell is vacuum potted and completely waterproof.