The soil NPK sensor is suitable for detecting the content of Nitrogen, Phosphorus, and Potassium in the soil, and judging the fertility of the soil by detecting the content of N, P, and K in the soil.
 
Output signal: RS485/4-20ma/0-5v/0-10v
RS485 to TTL pcb required to interface with Arduino.
 
The 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.
 
Soil npk sensor parameters :
 
Power supply: 5-30VDC
Maximum power consumption: ≤0.15W
Operating temperature: -40~80℃
NPK parameters:
Range: 0-1999 mg/kg(mg/L)
Resolution: 1 mg/kg(mg/L)
Precision: ±2%FS
Response time: ≤1S
Protection grade: IP68
Probe material: 316 stainless steel
Sealing material: Black flame-retardant epoxy resin
Default cable length: 2 meters, cable length can be customized
Dimensions: 45*15*123mm

Output signal: RS485/4-20ma/0-5v/0-10v