{"product_id":"rs485-4-in-1-soil-moisture-temperature-ph-ec-sensor-for-smart-agriculture-ip68-5-30v","title":"RS485 4-in-1 Soil Moisture, Temperature, pH \u0026 EC Sensor for Smart Agriculture (IP68, 5-30V)","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThe 4-in-1 soil sensor is designed to monitor key soil parameters: \u003cb\u003etemperature, humidity, electrical conductivity (EC), and pH\u003c\/b\u003e. With its wide voltage power supply range of \u003cb\u003e5-30V \u003c\/b\u003eand \u003cb\u003eRS485 data transmission\u003c\/b\u003e using the reliable \u003cb\u003eMODBUS-RTU\u003c\/b\u003e protocol, this sensor delivers rapid, accurate, and stable readings, enabling optimal irrigation scheduling and precise soil management. It is compatible with the Arduino UNO and TTL to RS485 expansion board for easy setup. It is suitable for a variety of agricultural, horticultural, and environmental applications, including greenhouse farming, large-scale irrigation systems, and scientific research. For most soil monitoring projects, this 4-in-1 sensor provides all the necessary data in one device, eliminating the need for multiple individual sensors.\u003c\/p\u003e\n\u003cp\u003eThe soil sensor boasts an IP68 protection level, vacuum-filled and sealed with black flame-retardant epoxy resin. The probe, crafted from 316 stainless steel, offers rust-proof, waterproof, anti-corrosion, salt-alkali corrosion resistance, and long-term electrolysis resistance properties. Its performance is influenced by the soil salt content. Compact in size, it can be buried in the soil for extended periods and is compatible with various soil types.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38041-content1.webp?v=1791350243\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38041-content2.webp?v=1791350255\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe soil sensor features an automatic temperature compensation function for conductivity, ensuring measurement accuracy regardless of environmental changes. Its applications span across agricultural irrigation, greenhouses, floriculture and vegetable farming, grassland pastures, rapid soil testing, plant cultivation, scientific experiments, grain storage, and the measurement of moisture content and temperature of various particulate matter.\u003c\/p\u003e\n\u003cp\u003eSoil temperature and moisture directly influence plant growth and nutrient absorption. Soil electrical conductivity (EC) represents soil salinity, a crucial indicator of soil fertility and health. High soil salt content hinders water absorption by plants. Soil pH, or “soil reaction”, is an acid-base reaction of the soil solution, dependent on the concentration of hydrogen ions. It’s expressed by the pH value, with 7 being neutral, less than 7 acidic, and greater than 7 alkaline. Soil pH can generally be divided into the following levels:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePH value Soil acidity and alkalinity \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e＜4.5 Extremely acidic\u003c\/p\u003e\n\u003cp\u003e4.5-5.5 Strongly acidic\u003c\/p\u003e\n\u003cp\u003e5.5-6.5 acidic\u003c\/p\u003e\n\u003cp\u003e6.5-7.5 Neutral\u003c\/p\u003e\n\u003cp\u003e7.5-8.5 alkaline\u003c\/p\u003e\n\u003cp\u003e8.5-9.5 Strongly alkaline\u003c\/p\u003e\n\u003cp\u003e\u0026gt;9.5 Extremely alkaline\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38041-content3.webp?v=1791350292\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eFor more detailed insights on selecting the most suitable sensor, refer to the guide on [How to Select the Best Soil Moisture Sensors for Agriculture and Research Lab].\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e5-30V wide voltage power supply\u003c\/li\u003e\n\u003cli\u003eRS485 output, can be used with Arduino\u003c\/li\u003e\n\u003cli\u003eWith automatic temperature compensation, high precision, fast response and stable output\u003c\/li\u003e\n\u003cli\u003eStainless steel probe can be buried in soil or water for a long time\u003c\/li\u003e\n\u003cli\u003eResin vacuum filling and sealing, IP68 protection level\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38041-content4.webp?v=1791350319\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower supply voltage: DC5-30V\u003c\/li\u003e\n\u003cli\u003ePower consumption: 0.5W@24V\u003c\/li\u003e\n\u003cli\u003eOutput mode: RS485\u003c\/li\u003e\n\u003cli\u003eDetection parameters: Temperature,、Humidity、Electrical Conductivity (EC)、PH\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHumidity parameters \u003c\/b\u003e\u003cbr\u003eMeasuring range: 0-100%\u003cbr\u003eResolution: 0.1%\u003cbr\u003eAccuracy: 0-50%@±2%, 50-100%@±3%\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTemperature parameters \u003c\/b\u003e\u003cbr\u003eMeasuring range: -40°C~+80°C\u003cbr\u003eResolution: 0.1°C\u003cbr\u003eAccuracy: ±0.5°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEC parameters \u003c\/b\u003e\u003cbr\u003eMeasuring range: 0-20000us\/cm\u003cbr\u003eResolution: 1us\/cm\u003cbr\u003eAccuracy: 0-10000us\/cm@±3%FS, 10000-20000us\/cm@±5%FS\u003cbr\u003eTemperature compensation: memory temperature compensation, compensation range 0-50°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003epH parameters \u003c\/b\u003e\u003cbr\u003eMeasuring range: 3-9pH\u003cbr\u003eResolution: 0.1pH\u003c\/li\u003e\n\u003cli\u003eProtection level: IP68\u003c\/li\u003e\n\u003cli\u003eProbe material: anti-corrosion special electrode\u003c\/li\u003e\n\u003cli\u003eSealing material: black flame retardant epoxy resin\u003c\/li\u003e\n\u003cli\u003eWorking temperature: -20°C~+60°C\u003c\/li\u003e\n\u003cli\u003eCable length: 2m\u003c\/li\u003e\n\u003cli\u003eSize: 123*45*15mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRS485 Soil Sensor(Temperature \u0026amp; Humidity \u0026amp; EC \u0026amp; pH) x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0604\/\" target=\"_blank\"\u003eProduct Wiki\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":67582478352461,"sku":"E38041-001","price":109.67,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38041-win1.jpg?v=1791350353","url":"https:\/\/www.mlab.com.au\/products\/rs485-4-in-1-soil-moisture-temperature-ph-ec-sensor-for-smart-agriculture-ip68-5-30v","provider":"MLAB","version":"1.0","type":"link"}