Soil NPK Sensor (Nitrogen-Phosphorus-Potassium) Fertility & Nutrient Measurements 74HC20 More water makes the soil

More water makes the soil conduct electricity more easily (less resistance)

It is a new generation of smart card reader

12 hPa (1m height)

Blue wire: Ground

The max output current 3A

Soil NPK Sensor (Nitrogen-Phosphorus-Potassium) Fertility & Nutrient Measurements 74HC20 More water makes the soilThe soil nutrient content can be easily measured using NPK Soil Sensor. Measurement of soil content N (nitrogen), P (phosphorus), and K (potassium) is necessary to determine how much additional nutrient content is to be added to soil to increase crop fertility. The soil fertility is detected using NPK sensors. A major component of soil fertilizer is nitrogen, phosphorus, and potassium. The knowledge of the soil nutrient concentration can help us to