{"product_id":"rs485-mini-soil-moisture-temperature-ec-sensor","title":"RS485 Mini Soil Moisture, Temperature and EC Sensor Modbus RTU","description":"\u003ch2\u003eRS485 Mini Soil Moisture, Temperature and EC Sensor Modbus RTU\u003c\/h2\u003e\n\u003cdiv id=\"product_info_fa63532cb6e858\" class=\"relative\"\u003e\n\u003cdiv class=\"html_content_2981\"\u003e\n\u003cdiv class=\"documents_list\"\u003e\n\u003cdiv id=\"product_info_c7b46e1200ec9\" class=\"relative\"\u003e\n\u003cdiv class=\"html_content_2981\"\u003e\n\u003cdiv class=\"documents_list\"\u003e\n\u003cdiv class=\"doc_item\"\u003e\u003cspan\u003eThe RS485 Mini Soil Moisture, Temperature and EC Sensor is an IP68-rated sensor for monitoring soil and soilless substrates. It measures volumetric water content from 0–100%, electrical conductivity up to 0–20 dS\/m, and temperatures from -40 to 80°C. With a resin-sealed body, durable sensing rods, RS485 Modbus RTU communication, a wide 3.0–28 V DC power supply range, and low-power consumption, this sensor is designed for long-term and reliable soil monitoring. Built-in reverse polarity, TVS, and ESD protection enhance system stability, making it ideal for smart agriculture, greenhouse monitoring, irrigation management, hydroponics, and research applications.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"doc_item\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"doc_item\"\u003e\n\u003cdiv id=\"product_info_8131c9bad3aae\" class=\"relative\"\u003e\n\u003cdiv class=\"text-24 font-mst-b max1080:text-22 leading-tight py-20 max1080:py-15\"\u003e\n\u003ch3\u003eFeature\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"html_content_2981\"\u003e\n\u003cp\u003eThe RS485 Mini Soil Moisture, Temperature and EC Sensor measures soil\/substrate volumetric water content, temperature, bulk EC, pore EC, and apparent dielectric permittivity, with support for RS485 Modbus RTU communication. Its IP68 resin-sealed body, durable sensing rods, low-power 3.0–28 V DC operation, reverse power protection, and built-in TVS\/ESD protection make it suitable for smart agriculture, greenhouse monitoring, irrigation control, hydroponics, horticulture, and soil research applications.\u003c\/p\u003e\n\u003cp\u003eThis sensor is available with an RS485 Modbus RTU interface. It is compatible with the\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003ca href=\"https:\/\/iot-store.com.au\/products\/sensecap-s2100-lorawan-sensor-hub-data-logger\" target=\"_blank\" style=\"color: rgb(255, 42, 0);\" rel=\"noopener\"\u003eSenseCAP S2100 LoRaWAN® Data Logger\u003c\/a\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.seeedstudio.com\/SenseCAP-S2100-LoRaWAN-Data-Logger-p-5361.html\"\u003e\u003c\/a\u003e, enabling low-power, long-range data transmission over LoRaWAN® networks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Parameter Soil\/Substrate Measurement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMeasures volumetric water content, temperature, bulk EC, pore EC, and apparent dielectric permittivity in soil or soilless substrates. This allows users to monitor moisture status, salinity\/fertilizer concentration, and substrate condition with one compact sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-feature_img_1_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRS485 Modbus RTU Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides a digital RS485 interface with Modbus RTU protocol for stable data transmission and easy integration with data loggers, gateways, controllers, and agricultural monitoring systems. The sensor supports standard Modbus register access for reading measurement values and configuring communication parameters.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-feature_img_2_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWide Measurement Ranges:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports 0–100% volumetric water content, -40 to 80°C substrate temperature, and 0–20 dS\/m bulk EC measurement. It also provides pore EC data through Modbus registers, making it suitable for soil moisture monitoring, irrigation control, and nutrient\/salinity management.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-feature_img_3_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow-Power, Wide-Voltage Operation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOperates from a 3.0–28 V DC power supply with low current consumption. The low-power design makes it suitable for battery-powered data loggers, remote field stations, and long-term agricultural monitoring deployments.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-feature_img_4_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIP68 Field Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt with an IP68 resin-sealed plastic body and robust epoxyencapsulation, the sensor is designed for wet, humid soil\/substrate environments and long-term stable field measurement. Reverse power protection and built-in TVS\/ESD protection help improve reliability during installation and protect against wiring mistakes, static discharge, and transient electrical interference.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-feature_img_5_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommendation for S2100 Data Logger\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSenseCAP S2100 Data Logger can connect to MODBUS RS485\/Analog\/GPIO industrial sensors\u003cspan\u003e \u003c\/span\u003eand transmit data from sensors to the LoRaWAN network. Benefiting from its high robustness and waterproof and dustproof enclosure, the S2100 data logger can work under harsh environments such as high UV exposure, heavy rain, dusty conditions, etc. which is ideal for outdoor use. Based on LoRaWAN, it can cover a long transmission range of 2km in urban scenes and 10km in line-of-sight while keeping lower power consumption. Equipped with built-in Bluetooth and app service for OTA configuration and remote management, it enables quick setup and update. It can be battery-powered or connected to a 12V external power supply. When the 12V power supply is connected, the replaceable built-in battery is set to be used as the backup power supply.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-feature_img_6_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAttention:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIf you need to connect sensors or an external power supply for the S2100, please refer to the wiring diagram below. Please note that the sensor supply voltage range is 3-28 V, while the external power supply for the S2100 must be a stable 12 V supply.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-feature_img_7_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product_info_3992051da40c08\" class=\"relative\"\u003e\n\u003cdiv class=\"absolute bottom-full left-0 w-full h-1 p_scroll_into_view_2981\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-24 font-mst-b max1080:text-22 leading-tight py-20 max1080:py-15\"\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"html_content_2981\"\u003e\n\u003cdiv class=\"p_2981_table_wrapper\"\u003e\n\u003ctable class=\"p_2981_table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eGeneral Parameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Model\u003c\/td\u003e\n\u003ctd\u003eS-Temp\u0026amp;VWC\u0026amp;EC-05A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Description\u003c\/td\u003e\n\u003ctd\u003eRS485 Mini Soil Moisture, Temperature and EC Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Interface\u003c\/td\u003e\n\u003ctd\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol\u003c\/td\u003e\n\u003ctd\u003eModbus-RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003eMeasuring: 10 mA typical, 15 mA max @ 3–28 VDC\u003cbr\u003eStandby\u003cstrong\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e300 μA typical, 800 μA max @ 3–28 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e3.0-28V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e2 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40-80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20*11*95 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing Encapsulation\u003c\/td\u003e\n\u003ctd\u003eResin packaged plastic body;\u003cbr\u003eRobust epoxy encapsulation;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eRods fully inserted into the substrate;\u003cbr\u003eEnsure good substrate contact;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"p_2981_table_wrapper\"\u003e\n\u003ctable class=\"p_2981_table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eSubstrate Temperature Measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e-40-80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.5°C (0-50°C), ±1.0°C (-40-80°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"p_2981_table_wrapper\"\u003e\n\u003ctable class=\"p_2981_table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eSubstrate Moisture Measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolumetric Water Content (VWC) Range\u003c\/td\u003e\n\u003ctd\u003e0-100% (air - water)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolumetric Water Content (VWC) Accuracy\u003c\/td\u003e\n\u003ctd\u003e±3% (0%-50%), ±5% (50%-100%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolumetric Water Content (VWC) Resolution\u003c\/td\u003e\n\u003ctd\u003e0%-50%: 0.1%;\u003cbr\u003e50%-100%: 0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"p_2981_table_wrapper\"\u003e\n\u003ctable class=\"p_2981_table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eSubstrate dielectric constant measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Dielectric Permittivity Range\u003c\/td\u003e\n\u003ctd\u003e1-81 (air - water)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Dielectric Permittivity Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1 (1.00-40.00);\u003cbr\u003e±3 (40.00-81.00)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Dielectric Permittivity Resolution\u003c\/td\u003e\n\u003ctd\u003e1.00-40.00: ±0.1;\u003cbr\u003e40.00-81.00: ±0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"p_2981_table_wrapper\"\u003e\n\u003ctable class=\"p_2981_table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eSubstrate EC Measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0-20 dS\/m(0-20000us\/cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±5% (0-5 dS\/m), ±10% (5-20 dS\/m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0-5 dS\/m: 0.01 dS\/m;\u003cbr\u003e5-20 dS\/m: 0.1 dS\/m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd\u003e0-50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWiring Diagram\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-spec_img_1_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product_info_741a2e3be7b4a\" class=\"relative\"\u003e\n\u003cdiv class=\"absolute bottom-full left-0 w-full h-1 p_scroll_into_view_2981\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-24 font-mst-b max1080:text-22 leading-tight py-20 max1080:py-15\"\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"html_content_2981\"\u003e\n\u003cul\u003e\n\u003cli\u003eField Irrigation Management\u003c\/li\u003e\n\u003cli\u003eGreenhouse Substrate Monitoring\u003c\/li\u003e\n\u003cli\u003eMulti-Substrate Monitoring\u003c\/li\u003e\n\u003cli\u003eResearch Plot Soil Balance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100076252-application_img_1_1.png?v=1788003793\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product_info_b3da37d9d5984\" class=\"relative\"\u003e\n\u003cdiv class=\"absolute bottom-full left-0 w-full h-1 p_scroll_into_view_2981\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-24 font-mst-b max1080:text-22 leading-tight py-20 max1080:py-15\"\u003e\n\u003ch3\u003eDocuments\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"html_content_2981\"\u003e\n\u003cdiv class=\"documents_list\"\u003e\n\u003cdiv class=\"doc_item\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003ca href=\"https:\/\/files.seeedstudio.com\/products\/100076252\/Datasheet%20for%20RS485%20Mini%20Soil%20Moisture%20Temperature%20and%20EC%20Sensor.pdf\" style=\"color: rgb(255, 42, 0);\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Seeed Studio","offers":[{"title":"Default Title","offer_id":48244592574700,"sku":"100076252","price":139.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/seeed-studio-sensor-rs485-mini-soil-moisture-temperature-and-ec-sensor-modbus-rtu-1256182516.jpg?v=1789736649","url":"https:\/\/iot-store.com.au\/products\/rs485-mini-soil-moisture-temperature-ec-sensor","provider":"IOT Store","version":"1.0","type":"link"}