1High Performance: Soil NPK sensor probe has accurate measurement, plug and play, fast response, good interchangeability. Insert the sensor into the soil and display the data directly for a few seconds. 2Corrosion Rsistance: 304 stainless steel probe adopts non electrolytic isolation design, never electrolytic, more resistant to salt and alkali corrosion. 3Durable Sealing Structure: The probe interface is poured with resin, waterproof and corrosion resistant, and the vacuum filling with epoxy resin has better sealing performance. 4For Long Time Detection: The soil nitrogen probe is IP68 waterproof and can be buried in the soil for a long time or put directly into the water for dynamic detection. 5Multifunctional: The probe is less affected by the salt content of the soil and can be applied to a variety of soil. It can measure soil temperature, soil moisture, PH, nitrogen, conductivity data.