DFRobot MODBUS-RTU RS485 Soil Moisture, Temperature & EC Sensor (IP68, 5-30V)
Description
- DFRobot MODBUS-RTU RS485 Soil Moisture, Temperature & EC Sensor (IP68, 5-30V)
- Facilitates rapid acquisition of soil data for optimal plant growth
- Supports wide voltage range and reliable MODBUS-RTU RS485 communication
- Exhibits quick response times and stable, reliable output
- Ensures accuracy with automatic temperature compensation for conductivity
- Features durable, anti-corrosion 316 stainless steel probe
The DFRobot MODBUS-RTU RS485 Soil Moisture, Temperature & EC Sensor (IP68, 5-30V) facilitates the rapid acquisition of soil temperature, moisture, and electrical conductivity (EC) data, ensuring precise irrigation for optimal plant growth. It supports a wide voltage power supply range and communicates data via RS485 using the reliable MODBUS-RTU protocol. The sensor exhibits quick response times and delivers stable, reliable output, making it suitable for integration with an Arduino UNO R3 and a TTL to RS485 expansion board to efficiently create a test environment.
The sensor is designed with a protection level of IP68 and is vacuum-filled and sealed with black flame-retardant epoxy resin. The probe material is made of 316 stainless steel, which is rust-proof, waterproof, and resistant to corrosion, including salt-alkali corrosion and long-term electrolysis. It is small, can be buried in the soil for extended periods, and is suitable for various soil types. The sensor also features an automatic temperature compensation function for conductivity, ensuring measurement accuracy regardless of environmental changes.

This sensor is widely used in agricultural irrigation, greenhouses, flowers and vegetables, grassland and pastures, soil rapid testing, plant culture, scientific experiments, grain storage, and the measurement of moisture content and temperature of various particulate matter. Proper soil temperature promotes plant root growth and nutrient absorption, while appropriate soil moisture helps plant roots absorb water and nutrients, maintaining water balance within plant cells. Soil electrical conductivity (EC) indicates soil salinity, which affects plant water absorption and overall health. Understanding these parameters is crucial for ensuring plant health and achieving higher yields.
Note: Ensure proper handling to avoid damage to the sensor and maintain its accuracy.
- 1x RS485 Soil Sensor (Temperature & Humidity & EC)
- 123 x 45 x 15 mm
- Cable length: 2 meters
- Power supply voltage: DC 5-30V
- Power consumption: 0.7W at 24V
- Output mode: RS485
- Detection parameters: Temperature, Humidity, Electrical Conductivity (EC)
- Humidity measurement resolution: 0.1%
- Humidity accuracy: ±2% for 0-50%, ±3% for 50-100%
- Temperature measurement resolution: 0.1°C
- Temperature accuracy: ±0.5°C
- EC measurement resolution: 1us/cm
- EC accuracy: ±3%FS for 0-10000us/cm, ±5%FS for 10000-20000us/cm
- Temperature compensation: Memory temperature compensation range
- Protection level: IP68
- Probe material: Anti-corrosion special electrode
- Sealing material: Black flame-retardant epoxy resin
- Working temperature range: -40°C to +60°C
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Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
European consumers exercising their statutory Right of Withdrawal are subject to different conditions. See the Statutory Right of Withdrawal.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
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- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets, or contact us through our Support Center.
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Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".