7-in-1 Soil Sensor | Moisture, pH, NPK, EC, RS485 Modbus

Professional 7-in-1 Soil Sensor for High-Precision Agriculture & Smart Farming

Take the guesswork out of soil management with this advanced 7-in-1 soil sensor that measures moisture, temperature, humidity, EC (electrical conductivity), pH, and NPK (nitrogen, phosphorus, potassium) — all in one compact, durable probe. Designed for farmers, agronomists, researchers, greenhouse operators, and serious home gardeners, this sensor delivers laboratory-grade readings directly in the field.

Why You'll Love This Soil Tester

• All-in-One Measurement: Replaces multiple separate instruments — monitor 7 critical soil parameters simultaneously for a complete picture of soil health.
• Multiple Output Protocols: Supports 4-20mA, 0-5V analog output, and RS485 Modbus RTU — making it compatible with PLCs, data loggers, Arduino, Raspberry Pi, and industrial automation systems.
• High Precision: Industrial-grade accuracy ensures reliable data for irrigation scheduling, nutrient management, and crop optimization.
• Compact & Rugged Design: Built from durable plastic, the sensor measures just 14 × 4.5 × 1.5 cm (5.51 × 1.77 × 0.59 in) — easy to insert into the soil and designed to withstand outdoor field conditions.
• Wide Compatibility: Works with most SCADA systems, IoT platforms, and smart irrigation controllers thanks to the universal Modbus protocol.
• No Battery Required: Powered directly via the signal wire interface — no battery changes, no downtime.

Key Specifications

• Parameters Measured: Soil Moisture, Soil Temperature, Ambient Humidity, EC (Electrical Conductivity), pH, N (Nitrogen), P (Phosphorus), K (Potassium)
• Output Signals: 4-20mA | 0-5V | RS485 Modbus RTU
• Material: Plastic (probe housing)
• Dimensions: 14 × 4.5 × 1.5 cm / 5.51 × 1.77 × 0.59 in
• Battery: Not required (externally powered)
• Package Contents: 1 × Soil Sensor

Perfect For

• Precision agriculture & smart farming systems
• Greenhouse and hydroponic monitoring
• Irrigation automation and scheduling
• Soil research, agronomy studies, and field trials
• DIY IoT agriculture projects (Arduino, Raspberry Pi)
• Vineyard, orchard, and crop field monitoring

Country of Origin

Made in Mainland China.

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Learn More About Soil Health

Understanding soil composition is critical to sustainable agriculture. For more information on soil nutrients and crop health, visit the USDA Crop Production Resource.

Learn more: Soil test

Frequently Asked Questions

Q: What soil parameters does this sensor measure?

A: This 7-in-1 soil sensor measures soil moisture, soil temperature, ambient humidity, EC (electrical conductivity), pH level, and NPK (nitrogen, phosphorus, and potassium) content — giving you a complete soil health profile in a single reading.

Q: What output signals does this soil sensor support?

A: The sensor supports 4-20mA analog current output, 0-5V analog voltage output, and RS485 Modbus RTU digital communication, making it compatible with a wide range of PLCs, data loggers, IoT platforms, Arduino boards, Raspberry Pi, and industrial SCADA systems.

Q: Does this soil sensor require batteries?

A: No batteries are required. The sensor is externally powered through its signal wire interface, making it ideal for continuous monitoring setups without the need for battery maintenance.

Q: Is this sensor suitable for DIY smart agriculture projects?

A: Absolutely! The RS485 Modbus RTU protocol and analog outputs make this sensor highly compatible with popular DIY platforms like Arduino and Raspberry Pi, as well as commercial IoT gateways and smart irrigation controllers.

Q: What is the size of this soil sensor?

A: The sensor measures 14 × 4.5 × 1.5 cm (approximately 5.51 × 1.77 × 0.59 inches). Please allow for slight variations of ±5-10mm due to manual measurement tolerances.