RS485 5-Pin Soil Sensor – NPK, pH, Temperature, Humidity & EC

The RS485 5-Pin Soil Sensor is a professional-grade multi-parameter soil monitoring sensor designed to measure soil NPK (Nitrogen, Phosphorus, and Potassium), pH, temperature, moisture (humidity), and electrical conductivity (EC). Using the industrial RS485 Modbus RTU communication protocol, it provides stable, long-distance, and interference-resistant data transmission for precision agriculture and environmental monitoring.

Built with a rugged waterproof probe, this sensor is suitable for continuous outdoor use in farms, greenhouses, irrigation systems, research projects, and smart agriculture applications. It delivers accurate real-time soil data, enabling users to optimize irrigation schedules, fertilizer application, and crop health.

The sensor is compatible with Arduino, ESP32, ESP8266, Raspberry Pi, PLCs, STM32, and industrial controllers through an RS485 interface or RS485-to-TTL converter.

Features
Measures 6 soil parameters:
Soil Moisture (Humidity)
Soil Temperature
Soil pH
Electrical Conductivity (EC)
Nitrogen (N)
Phosphorus (P)
Potassium (K)
RS485 Modbus RTU communication
5-pin industrial interface
Waterproof and corrosion-resistant probe
High measurement accuracy and stability
Long-distance communication with strong noise immunity
Suitable for continuous outdoor operation
Low power consumption
Easy integration with microcontrollers and PLCs

Applications
Smart agriculture
Precision farming
Greenhouse monitoring
Irrigation automation
Soil fertility analysis
Hydroponics and horticulture
Environmental monitoring
Agricultural research
IoT-based farming systems
Weather and crop monitoring stations

Compatible With
Arduino Uno
Arduino Mega
ESP32
ESP8266
Raspberry Pi
STM32
PLC systems
RS485 Modbus controllers
Industrial automation systems

Technical Specifications
Communication Protocol: RS485 Modbus RTU
Interface: 5-Pin
Supply Voltage: 9–30V DC (model dependent)
Measured Parameters:
Soil Moisture
Soil Temperature
Soil pH
Electrical Conductivity (EC)
Nitrogen (N)
Phosphorus (P)
Potassium (K)
Protection Rating: Waterproof (suitable for outdoor installation)
Installation: Direct soil insertion
Cable Length: Varies by model

Package Includes
1 × RS485 5-Pin Soil Sensor (NPK, pH, Temperature, Humidity & EC)