The Soil Multifunctional 7-in-1 Sensor is an integrated agricultural sensor designed to measure key soil parameters including nitrogen, phosphorus, potassium, pH, electrical conductivity, temperature, and moisture. It operates on a 12–24V DC power supply and communicates via RS485 for stable and long-distance data transmission. With IP68 protection and fast response time, the sensor is suitable for continuous outdoor use in harsh soil environments. It is widely used in smart agriculture systems, greenhouses, orchards, and soil monitoring applications requiring reliable multi-parameter measurement.