{"product_id":"modbus-rtu-rs485-soil-ec-and-ph-monitoring-sensor-ip68-5-30v","title":"MODBUS-RTU RS485 Soil EC and pH Monitoring Sensor (IP68, 5-30V)","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThe soil \u003cb\u003eelectrical conductivity (EC) and pH sensor\u003c\/b\u003e operate within a wide voltage range of 5-30V, transmit data via RS485 using the MODBUS-RTU protocol, and deliver quick, reliable responses with minimal interference from environmental factors. The sensor is designed for easy integration with Arduino systems and is well-suited for hydroponic systems, saline and alkaline soil management, and drip irrigation systems.\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\/E38042-content1.webp?v=1791351186\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38042-content2.webp?v=1791351185\" 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 other soil environment testing scenarios.\u003c\/p\u003e\n\u003cp\u003eSoil electrical conductivity (EC) represents the salinity level in the soil. These parameters serve as crucial indicators of soil fertility and health, with a direct impact on plant life. High salt content in soil impedes water absorption by plants, despite high soil moisture content. This condition could eventually “burn” the plant. Optimal plant growth occurs within preferred environmental conditions, including specific ranges of soil moisture, temperature, and EC levels. Data on these parameters is essential for growers to understand necessary actions for ensuring plant health and achieving higher yields.\u003c\/p\u003e\n\u003cp\u003eSoil pH, also referred to as “soil reaction”, is an acid-base reaction of the soil solution. It primarily depends on the concentration of hydrogen ions in the soil solution, expressed by the pH value. A solution with a pH value of 7 is neutral; a solution with a pH value less than 7 exhibits an acidic reaction; a solution with a pH value greater than 7 shows an alkaline reaction. Soil pH can generally be categorized 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\/E38042-content3.webp?v=1791351225\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eFor more detailed insights on selecting the most suitable sensor, refer to the guide on [\u003cb\u003eHow to Select the Best Soil Moisture Sensors for Agriculture and Research Lab\u003c\/b\u003e].\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\/E38042-content4.webp?v=1791351247\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower supply voltage: DC 5-30V\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: Electrical Conductivity (EC), PH\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eEC parameters \u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasuring range: 0-20000us\/cm\u003c\/li\u003e\n\u003cli\u003eResolution: 1us\/cm\u003c\/li\u003e\n\u003cli\u003eAccuracy: 0-10000us\/cm@±3%FS, 10000-20000us\/cm@±5%FS\u003c\/li\u003e\n\u003cli\u003eTemperature compensation: memory temperature compensation, compensation range 0-50°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003epH parameters \u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasuring range: 3-9pH\u003c\/li\u003e\n\u003cli\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 (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\/sen0603\/\" 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":67582648385613,"sku":"E38042-001","price":107.26,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38042-win1.jpg?v=1791351309","url":"https:\/\/www.mlab.com.au\/products\/modbus-rtu-rs485-soil-ec-and-ph-monitoring-sensor-ip68-5-30v","provider":"MLAB","version":"1.0","type":"link"}