{"product_id":"rs485-oxygen-concentration-o-sensor","title":"RS485 Oxygen Concentration O₂ Sensor","description":"\u003cp\u003e\u003cstrong\u003eThe RS485 Oxygen Concentration O2 Sensor continuously measures oxygen concentration, partial pressure, temperature and barometric pressure, with one-second updates and RS485 Modbus RTU connectivity for real-time monitoring.\u003c\/strong\u003e\u003c\/p\u003e \u003chr\u003e \u003cp\u003eThe \u003ca href=\"\/collections\/seeed\" title=\"Seeed Products\"\u003eSeeed\u003c\/a\u003e \u003cstrong\u003eRS485 Oxygen Concentration O2 Sensor\u003c\/strong\u003e is a high-precision, \u003cstrong\u003emulti-parameter sensor\u003c\/strong\u003e designed for \u003cstrong\u003econtinuous oxygen monitoring\u003c\/strong\u003e. It is widely used in HVAC, laboratories, scientific research, indoor air monitoring, and environmental monitoring.\u003c\/p\u003e \u003cp\u003eThe sensor measures \u003cstrong\u003eoxygen concentration\u003c\/strong\u003e, \u003cstrong\u003eoxygen partial pressure\u003c\/strong\u003e, \u003cstrong\u003etemperature\u003c\/strong\u003e, and\u003cstrong\u003e barometric pressure\u003c\/strong\u003e, with readings updated every second. Its non-electrochemical luminescence-quenching technology and \u003cstrong\u003elong-life SST® O2 sensing element\u003c\/strong\u003e provide accurate and stable measurement across a \u003cstrong\u003e0-25% range\u003c\/strong\u003e.\u003c\/p\u003e \u003cp\u003eFor easy integration, it supports \u003cstrong\u003eRS485 Modbus RTU communication\u003c\/strong\u003e and low-power \u003cstrong\u003e9-28 V DC operation\u003c\/strong\u003e, while its \u003cstrong\u003eIP50 wall-mounted design\u003c\/strong\u003e allows for convenient installation. Built-in surge, reverse-polarity, TVS, and ESD protection further enhance reliability during long-term operation.\u003c\/p\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eComprehensive Oxygen Monitoring:\u003c\/strong\u003e Measures ambient oxygen partial pressure, oxygen concentration, temperature, and barometric pressure in one device. This provides the essential parameters required for evaluating oxygen conditions and understanding how environmental changes affect oxygen concentration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfigurable Measurement and Data Output:\u003c\/strong\u003e Provides both original and calibrated values for oxygen partial pressure, oxygen concentration, temperature, and barometric pressure. Configurable measurement offsets, temperature units, and floating-point byte order simplify data adjustment and ensure compatibility with different controllers and data-acquisition systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible RS485 System Integration:\u003c\/strong\u003e Uses RS485 Modbus-RTU for reliable long-distance communication and supports multiple sensors on one bus. Configurable device address, baud rate, parity, stop bits, and data format simplify integration with PLCs, data loggers, controllers, and monitoring systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable Low-Power Indoor Operation:\u003c\/strong\u003e Operates from a 9–28 V DC supply with an average current below 10 mA at 12 V DC. Its compact IP50 wall-mounted design allows for easy installation. In addition, reverse-polarity, surge, and built-in TVS\/ESD protection improve reliability against wiring errors and electrical interference.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSenseCAP S2100 Data Logger\u003c\/strong\u003e can connect to Modbus RS485\/Analog\/GPIO industrial sensors including the Grow Your Idea 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. 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\/li\u003e \u003c\/ul\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSensor Description\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRS485 Oxygen Concentration O2 Sensor\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOutput Interface\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRS485, Modbus-RTU\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eDefault Serial Communication\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSlave address: 1;\u003cbr\u003ebaud rate: 9600 bps;\u003cbr\u003edata bits: 8;\u003cbr\u003estop bits: 1;\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e9-28 V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eAverage Current: \u0026lt;10mA @12V DC\u003cbr\u003eMeasuring Current : \u0026lt;20mA @12V DC, measurement interval 1000ms\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e10-45°C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOperating Humidity\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0-95%RH,, non-condensing\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eIP50\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2 meters\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eWall mounting\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSensor body: 111 * 25.5 mm (Length * Diameter)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOxygen Partial Pressure\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0-300 mbar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026lt;2% FS\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.1 mbar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOxygen Concentration\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0-25%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eDetermined by the accuracy of oxygen partial pressure and barometric pressure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.01%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTemperature Measurement\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e-10-60°C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e±2°C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.1°C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eBarometric Pressure Measurement\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e500-1200 mbar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e±5 mbar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1 mbar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSupplier Code\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e \u003cp\u003e100046309\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3\u003eWiring Diagram\u003c\/h3\u003e \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/106958_wiring_diagram_1.jpg?v=1787316360\" alt=\"\"\u003e\u003c\/p\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/files.seeedstudio.com\/products\/100046309\/res\/Data%20sheet%20for%20RS485%20Oxygen%20Concentration%20O2%20Sensor.pdf\" target=\"_blank\" rel=\"noopener\" title=\"Datasheet\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePackage Contents\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1x RS485 Oxygen Concentration O₂ Sensor\u003c\/li\u003e \u003cli\u003e1x Mounting bracket\u003c\/li\u003e \u003cli\u003e2x Plastic screws\u003c\/li\u003e \u003cli\u003e2x Metal screws\u003c\/li\u003e \u003c\/ul\u003e","brand":"Seeed","offers":[{"title":"Default Title","offer_id":56151996400001,"sku":"106958","price":277.4,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/rs485-oxygen-concentration-o-sensor-seeed-106958-1255427085.jpg?v=1787323870","url":"https:\/\/thepihut.com\/products\/rs485-oxygen-concentration-o-sensor","provider":"The Pi Hut","version":"1.0","type":"link"}