> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # MODBUS-RTU RS485 Soil Moisture, Temperature & EC Sensor (IP68, 5-30V) **Type:** Product page · **SKU:** SEN0601 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/modbus-rtu-rs485-soil-moisture-temperature-ec-sensor-ip68-5-30v.html ([markdown](https://core-electronics.com.au/modbus-rtu-rs485-soil-moisture-temperature-ec-sensor-ip68-5-30v.html.md)) Accurate measurements of soil temperature, moisture, and electrical conductivity are provided by the soil sensor. Data communication is facilitated via... ## Pricing - **Price:** $65.90 (inc GST) — $59.91 AUD, exc GST - **Quantity discounts:** 6+ $56.91 (exc GST) · 12+ $54.52 (exc GST) ## Availability & dispatch - Out of stock — the product page offers email notification when it returns. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0601:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0601:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description This soil sensor facilitates 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 of 5-30V and communicates data via RS485 using the reliable MODBUS-RTU protocol. The sensor exhibits quick response times and delivers stable, reliable output. Seamlessly integrate it with an [Arduino UNO R3](https://www.dfrobot.com/product-610.html) and a TTL to RS485 expansion board to efficiently create a test environment. The protection level of the soil sensor is IP68, and it 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, anti-corrosion, salt-alkali corrosion resistance, and long-term electrolysis resistance. It is more affected by the soil salt content. It is small, can be buried in the soil for a long time, and is suitable for various soil types. ![Wiring Diagram of soil sensor and Arduino Uno](https://core-electronics.com.au/attachments/localcontent/3_15496119efa.png) Wiring Diagram of soil sensor and Arduino Uno ![Probe Material - 316 Stainless Steel](https://core-electronics.com.au/attachments/localcontent/4_11025f3e072.png) Probe Material - 316 Stainless Steel The soil sensor has an automatic temperature compensation function for conductivity, which ensures measurement accuracy no matter how the environment changes. It 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. Soil temperature has a direct impact on plant growth. Proper soil temperatures help promote plant root growth and the ability to absorb nutrients. Generally speaking, higher soil temperature is helpful for plant growth because it can increase plant metabolism, promote nutrient absorption and transport, and increase plant microbial synthesis capabilities, thereby promoting plant growth rate and yield. In addition, appropriate soil moisture helps plant roots absorb water and nutrients and maintains water balance within plant cells. If the soil moisture is too low, plant roots will be limited in absorbing water, which can lead to plant dehydration, stagnant growth or even death. Excessive soil moisture may cause hypoxia in plant roots, hinder normal respiration and nutrient absorption of roots, and thus affect plant growth and development. Soil electrical conductivity (EC) is the level of salt in the soil (salinity). These parameters are important indicators of soil fertility and health, and ultimately affect plants. When soil has high salt content, the salt makes it difficult for plants to absorb water, even if the moisture content in the soil is high. This condition will eventually "burn" the plant. Plants grow best in their preferred environment within the optimal range of soil moisture, temperature and EC levels. Growers need data on these parameters and understand what actions need to be taken to ensure plant health and higher yields. ![How to install and use the soil sensor](https://core-electronics.com.au/attachments/localcontent/6_295140b36a7.png) How to install and use the soil sensor ### Features 15. **Wide Voltage Range:** Supports 5-30V power supply. 16. **RS485 Output:** Compatible with Arduino and other systems. 17. **Automatic Temperature Compensation:** Ensures measurement accuracy regardless of environmental changes. 18. **Stainless Steel Probe:** Designed for long-term burial in soil or water. 19. **IP68 Protection Level:** Vacuum-filled and sealed with flame-retardant epoxy resin. ### Applications ![Applications of RS485 Soil Sensor - Grasslands and Pastures, Soil Rapid Testing](https://core-electronics.com.au/attachments/localcontent/5_126144a2792.png) ### Specification 23. Power supply voltage: DC5-30V 24. Power consumption: 0.7W@24V 25. Output mode: RS485 26. Detection parameters: Temperature, Humidity, Electrical Conductivity (EC) 27. Humidity parameters Measuring range: 0-100% Resolution: 0.1% Accuracy: 0-50%@±2%, 50-100%@±3% 28. Temperature parameters Measuring range: -40°C~+80°C Resolution: 0.1°C Accuracy: ±0.5°C 29. EC parameters Measuring range: 0-20000us/cm Resolution: 1us/cm Accuracy: 0-10000us/cm@±3%FS, 10000-20000us/cm@±5%FS Temperature compensation: memory temperature compensation, compensation range 0-50°C 30. Protection level: IP68 31. Probe material: anti-corrosion special electrode 32. Sealing material: black flame retardant epoxy resin 33. Working temperature: -40°C~+60°C 34. Cable length: 2m 35. Size: 123\*45\*15mm ### Documents 37. [Product wiki](https://wiki.dfrobot.com/RS485_Soil_Sensor_Temperature_Humidity_EC_SKU_SEN0601) ### Parts List 39. RS485 Soil Sensor (Temperature&Humidity&EC) x1 ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0601-1.jpg)