Soil Nitrogen, Phosphorus, and Potassium Sensor (NPK) 485 Type Three‑Pin

The ZTS‑3002‑TR‑NPK‑N01 Soil Nutrient Sensor is a professional RS485‑based device designed to measure nitrogen (N), phosphorus (P), and potassium (K) levels in soil. Operating on a wide DC 5–30V supply range, it provides accurate digital output for fertility analysis and smart agriculture applications.
With its RS485 communication protocol, the sensor supports long‑distance data transmission and multi‑node networking, making it suitable for integration with PLCs, data loggers, and microcontrollers such as Arduino, STM32, and ESP32.

Model Information

• Model: ZTS‑3002‑TR‑NPK‑N01
• Batch No.: 2603

Technical Specifications

• Technology: RS485 communication protocol
• Power Supply: DC 5–30V
• Purpose: Measures soil nutrients (Nitrogen, Phosphorus, Potassium – NPK) to evaluate soil fertility
• Interface: RS485 (Modbus RTU compatible)
• Output: Digital data for NPK values

Wiring Details

• Brown: Power positive (+Vcc)
• Black: Power negative (GND)
• Yellow: RS485‑A (Data+)
• Blue: RS485‑B (Data−)

⚙️ Features

• Accurate soil nutrient measurement for NPK levels
• RS485 protocol allows long‑distance communication and multi‑sensor networking
• Wide voltage range (5–30V DC) for flexible deployment
• Compact and durable design for field use
• Supports integration with Arduino, STM32, PLCs, and industrial controllers

* Images shown is a representation only.