{"product_id":"rs485-voc-nox-temperature-humidity-sensor","title":"RS485 VOC NOx Temperature and Humidity Sensor Modbus RTU RS485 Air Quality Index","description":"\u003ch2\u003eRS485 VOC NOx Temperature and Humidity Sensor Modbus RTU RS485 Air Quality Index\u003c\/h2\u003e\n\u003cdiv id=\"product_info_6d704b54bf4238\" class=\"relative\"\u003e\n\u003cdiv class=\"html_content_2981\"\u003e\n\u003cdiv class=\"documents_list\"\u003e\n\u003cdiv class=\"doc_item\"\u003e\n\u003cdiv class=\"box-inner1 box-inner1-2 product-info-box product-short-desc-box\"\u003e\n\u003cdiv class=\"product-info-short-description product-info-box clearfix\"\u003e\n\u003cdiv class=\"product attribute short_description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"box-inner1 box-inner1-2 product-info-box product-short-desc-box\"\u003e\n\u003cdiv class=\"product-info-short-description product-info-box clearfix\"\u003e\n\u003cdiv class=\"product attribute short_description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cp\u003eThe RS485 VOC, NOx, Temperature \u0026amp; Humidity Sensor (S-AQI-01A) is a compact multi-parameter air quality sensor designed for indoor environment monitoring. Built with the Sensirion SGP41 sensor, it accurately measures VOC and NOx indexes while providing temperature, humidity, and dew point readings for comprehensive air quality analysis. With 1-second measurement updates, the sensor provides real-time air quality data for monitoring and control systems. It supports RS485 Modbus RTU communication and a wide 5–28 V DC power input, making it easy to integrate into air purifiers, HVAC systems, and other smart environmental monitoring solutions. The IP50 wall-mounted enclosure supports flexible installation, while built-in surge, reverse polarity, TVS, and ESD protection ensure stable operation in various applications. Ideal for indoor air quality monitoring, scientific research, laboratories, warehouses, cold chain facilities, and demand-controlled ventilation systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-inner2 product-info-box clearfix\"\u003e\n\u003cdiv class=\"product-info-price-options product-info-box\"\u003e\n\u003cdiv class=\"product-info-price-sku clearfix\"\u003e\n\u003cdiv class=\"price-box price-final_price\"\u003e\n\u003cdiv id=\"product_info_0f5a167e1d55f\" 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\u003e\u003cstrong\u003eComprehensive Indoor Air Quality Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMeasures VOC index, NOx index, temperature, humidity, and dew point in a single device. The integrated Sensirion SGP41 MOX sensor provides reliable VOC and NOx index values for evaluating indoor air quality, while the built-in temperature and humidity sensing delivers additional environmental context essential for understanding overall air conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Accuracy with Configurable Calibration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides both original and calibrated values for temperature, humidity, and dew point. Configurable temperature and humidity offset calibration allows users to compensate for installation-specific conditions and improve measurement accuracy in different environments.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100089706-feature_img_1.png?v=1788061741\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible RS485 System Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUses RS485 Modbus-RTU for reliable long-distance communication and supports multiple sensors on one bus. Configurable device address (0–255), baud rate (1200–38400 bps), parity, stop bits, and data format simplify integration with PLCs, data loggers, controllers, and monitoring systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow-Power Design for Flexible Deployment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe sensor operates on a wide 5–28V DC power supply with a quiescent current below 5 mA at 12 V DC, making it suitable for energy-efficient and battery-powered applications. The compact IP50 wall-mounted enclosure enables easy installation, while built-in reverse-polarity, surge, TVS, and ESD protection ensure reliable operation.\u003c\/p\u003e\n\u003cdiv class=\"tips\"\u003e\n\u003cdiv class=\"right-desc\"\u003e\n\u003cp\u003eNote:\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ePlease note that this sensor is designed for indoor use and is not suitable for direct outdoor installation. The IP50 enclosure provides protection against dust and is not waterproof, please avoid exposure to rain, water splashes, or high-moisture environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100089706-feature_img_2.png?v=1788061741\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"ace-line ace-line old-record-id-doxcn6BGUiHBY7xyqEhNnHJ54ff\"\u003e\n\u003cstrong\u003eLoRaWAN®\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003eConnectivity\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003ewith SenseCAP S2100\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-doxcn6BGUiHBY7xyqEhNnHJ54ff\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-doxcnT78SmOqSk8nGKphikRWoOd\"\u003e\n\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 Data Logger\u003c\/a\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.seeedstudio.com\/SenseCAP-S2100-LoRaWAN-Data-Logger-p-5361.html?qid=oo7fxxv5_1785832035057\"\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ecan connect to Modbus RS485\/Analog\/GPIO industrial sensors and 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. With built-in Bluetooth, it enables quick setup and OTA updates via the mobile app. 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 used as a backup power supply, supporting lower power consumption.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-doxcnT78SmOqSk8nGKphikRWoOd\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-doxcnT78SmOqSk8nGKphikRWoOd\"\u003e\u003cimg src=\"https:\/\/media-cdn.seeedstudio.com\/media\/wysiwyg\/111-photo\/Gemini_Generated_Image_bmnx8abmnx8abmnx_1_.png\" alt=\"\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tips\"\u003e\n\u003cdiv class=\"right-desc\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-doxcntnIxg9aqODzKVofz3U9eEc\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-doxcnzmSPY9jyKvDTlExMoXZALh\"\u003eThis sensor requires a 5–28V power supply. If you use the S2100 for data acquisition, please note that its maximum sensor supply output is only 5V. Therefore, please ensure that the S2100 can provide adequate output voltage for the sensor. The S2100 can be externally powered with a stable 12V DC input. Please ensure that an appropriate supply voltage is selected for each device.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-doxcnzmSPY9jyKvDTlExMoXZALh\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/Gemini_Generated_Image_bmnx8abmnx8abmnx_1.webp?v=1788061741\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product_info_bdace94db1d1b\" class=\"relative\"\u003e\n\u003cdiv class=\"absolute bottom-full left-0 w-full h-1 p_scroll_into_view_2981\"\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\u003cb\u003eGeneral Parameters\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eS-AQI-01A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Interface\u003c\/td\u003e\n\u003ctd\u003eRS485, Modbus-RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefault Serial Communication\u003c\/td\u003e\n\u003ctd\u003eSlave address: 1;\u003cbr\u003ebaud rate: 9600 bps;\u003cbr\u003edata bits: 8;\u003cbr\u003estop bits: 1;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e5–28 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eQuiescent: \u0026lt;5 mA @12 V DC\u003cbr\u003eMax: \u0026lt;10 mA @12 V DC\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\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e0–95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP50\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\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eWall mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSensor body: 111 * 25.5 mm (Length * Diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\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\u003cb\u003eMeasurement Specifications\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cb\u003eVOC Index\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e1–500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cb\u003eNOx Index\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e1–500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cb\u003eTemperature Measurement\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e-40–125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.2°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.01°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNote\u003c\/td\u003e\n\u003ctd\u003eLong-term operating temperature range: -40–80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cb\u003eHumidity Measurement\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0–100% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e1.8% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.01% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cb\u003eDew Point Measurement\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e-100–125°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\u003cp\u003e\u003cstrong\u003eWiring Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100089706-spec_img_1.png?v=1788061741\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product_info_ef6206b38f015\" 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\u003eAir Purification Systems\u003c\/li\u003e\n\u003cli\u003eHVAC and Ventilation Systems\u003c\/li\u003e\n\u003cli\u003eIndoor Air Quality Monitoring\u003c\/li\u003e\n\u003cli\u003eLaboratory Environmental Monitoring\u003c\/li\u003e\n\u003cli\u003eWarehousing\u003c\/li\u003e\n\u003cli\u003eScience Research\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/100089706-application_img_1.png?v=1788061741\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"product_info_ca9c1f9c3bb8b\" class=\"relative\"\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\u003cdiv class=\"doc_item\"\u003e\n\u003cdiv id=\"product_info_54b5c4606975f\" class=\"relative\"\u003e\n\u003cdiv class=\"text-24 font-mst-b max1080:text-22 leading-tight py-20 max1080:py-15\"\u003e\n\u003cdiv id=\"product_info_fdc714f0e89b2\" class=\"relative\"\u003e\n\u003cdiv class=\"text-24 font-mst-b max1080:text-22 leading-tight py-20 max1080:py-15\"\u003e\n\u003cdiv id=\"product_info_62bf513eb8cb78\" class=\"relative\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"html_content_2981\"\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\/100089706\/RS485%20VOC,%20NOx,%20Temperature%20and%20Humidity%20Sensor(S-AQI-01A)%20User%20Manual.pdf\" style=\"color: rgb(255, 42, 0);\" target=\"_blank\"\u003eRS485 VOC, NOx, Temperature and Humidity Sensor User Manual\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\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Seeed Studio","offers":[{"title":"Default Title","offer_id":48246279602412,"sku":"100089706","price":179.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1386\/3791\/files\/seeed-studio-air-quality-rs485-voc-nox-temperature-and-humidity-sensor-modbus-rtu-rs485-air-quality-index-1256227945.jpg?v=1789734012","url":"https:\/\/iot-store.com.au\/products\/rs485-voc-nox-temperature-humidity-sensor","provider":"IOT Store","version":"1.0","type":"link"}