7-in-1 Soil Moisture, Temperature, Humidity, EC, pH & NPK Sensor with RS485, 4-20mA or 0-5V Output

Monitor soil conditions with greater accuracy and confidence using the CWT-SOIL Multi-Parameter Soil Sensor, a professional-grade solution designed for agriculture, greenhouse management, irrigation systems, environmental monitoring, scientific research, and smart farming applications. Combining multiple critical measurements into one compact probe, this advanced sensor provides real-time data on soil moisture, temperature, humidity, electrical conductivity (EC), pH, nitrogen (N), phosphorus (P), and potassium (K) to help optimize growing conditions and improve crop performance.

Built with industrial-grade components and a rugged stainless steel probe, this sensor is engineered for long-term field deployment. The fully sealed vacuum-potted construction offers IP68 waterproof protection, allowing continuous operation in wet environments and even long-term immersion in water. Its corrosion-resistant design withstands harsh soil conditions while delivering stable and reliable performance over extended periods.

The sensor supports multiple output options including RS485 Modbus RTU, 4-20mA, 0-5V, and 0-10V, making integration simple with PLCs, industrial controllers, data loggers, SCADA systems, irrigation controllers, and IoT monitoring platforms. Fast response times and stable output ensure timely access to critical soil information for informed decision-making.

Designed for professional agricultural use, the sensor measures soil conductivity and pH with high accuracy while providing valuable moisture and temperature data for irrigation management. NPK monitoring offers trend-based nutrient insights for crop management and fertilizer planning. Additionally, the sensor supports NPK data writing functionality, allowing users to input measurements obtained from laboratory-grade instruments into their monitoring systems for enhanced data management.

The optional 4.3-inch HMI Touch Screen provides a convenient local monitoring solution with real-time dashboards, graphical trend curves, calibration settings, onboard data logging, and SD card export capabilities. This makes field monitoring simple without requiring additional software or networking equipment.

Key Features:

• Multi-parameter soil monitoring in one compact sensor

• Measures soil moisture, temperature, humidity, EC, pH, nitrogen, phosphorus, and potassium

• Available outputs: RS485 Modbus RTU, 4-20mA, 0-5V, and 0-10V

• Industrial-grade stainless steel probe construction

• IP68 waterproof and dustproof protection

• Suitable for long-term burial and outdoor use

• Fast response times with stable and reliable measurements

• Corrosion-resistant and anti-electrolysis design

• Low power consumption operation

• Compatible with PLC, SCADA, IoT, and automation systems

• Optional 4.3-inch HMI touch screen display

• Supports data logging and SD card export

• Easy installation and maintenance

Measurement Specifications:

• Soil Temperature Range: -40°C to 80°C

• Soil Moisture Range: 0% to 100%

• EC Range: 0 to 20,000 μS/cm

• pH Range: 3 to 9 pH

• NPK Range: 1 to 1999 mg/kg

• Response Time: As fast as 1 second depending on parameter

• Power Supply: DC 4.5V to 30V

• Maximum Power Consumption: 0.5W at 24V DC

• Protection Rating: IP68

• Sensor Dimensions: 45 × 15 × 123 mm

• Standard Cable Length: 2 meters (custom lengths available)

Applications:

• Precision agriculture

• Smart irrigation systems

• Greenhouse automation

• Hydroponics and horticulture

• Landscape management

• Turf and pasture monitoring

• Environmental monitoring projects

• Agricultural research and testing

• Soil fertility management

• Water-saving irrigation systems

Important Note: NPK measurements utilize rapid electronic detection technology and are intended primarily for trend analysis and planting reference. For highly precise nutrient analysis, laboratory testing remains the preferred method. The sensor also supports manual NPK data input for integration with external measurement systems.

Improve irrigation efficiency, monitor soil health in real time, and make data-driven growing decisions with this advanced Multi-Parameter Soil Moisture, Temperature, EC, pH, and NPK Sensor designed for modern agricultural and industrial monitoring applications.