{"product_id":"rs485-carbon-monoxide-co-sensor","title":"RS485 Carbon Monoxide CO Sensor","description":"\u003cp\u003e\u003cstrong\u003eThe RS485 Carbon Monoxide (CO) Sensor measures CO concentrations from 0–2,000ppm alongside temperature, with built-in compensation for stable readings and RS485 Modbus RTU connectivity for straightforward integration.\u003c\/strong\u003e\u003c\/p\u003e \u003chr\u003e \u003cp\u003eThe \u003ca href=\"\/collections\/seeed\" title=\"Seeed Products\"\u003eSeeed\u003c\/a\u003e \u003cstrong\u003eRS485 Carbon Monoxide (CO) Sensor\u003c\/strong\u003e is a \u003cstrong\u003ecompact, wall-mounted sensor\u003c\/strong\u003e designed for industrial, environmental, \u003ca href=\"\/collections\/home-automation-store\" title=\"Home Automation Store\"\u003esmart home\u003c\/a\u003e air-quality, and laboratory monitoring.\u003c\/p\u003e \u003cp\u003eIt measures CO concentrations from \u003cstrong\u003e0 to 2,000 ppm\u003c\/strong\u003e while also providing \u003cstrong\u003ecalibrated temperature data\u003c\/strong\u003e. In addition, integrated temperature compensation and low baseline drift help maintain stable readings under changing conditions.\u003c\/p\u003e \u003cp\u003eFor easy integration, it supports \u003cstrong\u003eRS485 Modbus RTU\u003c\/strong\u003e communication and operates on a \u003cstrong\u003e5–28 V DC power supply\u003c\/strong\u003e. Its low-power design, reverse-polarity protection, and built-in surge, TVS, and ESD protection ensure reliable long-term use.\u003c\/p\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eIntegrated CO and Temperature Monitoring:\u003c\/strong\u003e Measures carbon monoxide concentrations from 0 to 2000 ppm—with a resolution of 10 ppm—and provides calibrated temperature data. Moreover, its T90 response time of less than 35 seconds enables timely detection of concentration changes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTemperature Compensation and Flexible Calibration: \u003c\/strong\u003eSupports both sensor-sensitivity calibration and standard-gas calibration. Zero and span calibration help improve measurement accuracy. Meanwhile, configurable temperature-compensation coefficients and temperature-offset adjustment reduce the influence of changing ambient temperatures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial RS485 Modbus RTU Communication:\u003c\/strong\u003e Uses the RS485 Modbus RTU interface for reliable long-distance data transmission and connection of multiple sensors on the same communication bus. Configurable device address, baud rate, parity, and data format make integration with industrial controllers, data loggers, and monitoring systems more flexible.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, Low-Power and Protected Design:\u003c\/strong\u003e Features a compact, wall-mounted structure and supports a wide 5–28 V DC power supply. Its low-power design helps reduce energy consumption. Furthermore, surge, reverse-polarity, TVS, and ESD protection improve operational reliability reliability—supporting an expected service life of at least two years in air.\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\u003eProduct Model\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eS-CO-01A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSensor Description\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRS485 Carbon Monoxide CO 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\u003e5-28V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003equiescent current \u0026lt;2mA @12V DC;\u003cbr\u003emaximum current during measurement \u0026lt;7mA @12V DC\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e-20 ~ 50 ℃\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOperating Humidity\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e15 to 90 %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\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eWall mounting\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\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSensor body: 111 x 25.5 mm (Length x Diameter)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCarbon Monoxide Concentration 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\u003e0-2000ppm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e10ppm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.028±0.010 uA\/ppm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eResponse Time(T90)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026lt;35 seconds\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- 40～80℃\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\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e± 0.3℃\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSupplier Code\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e100069114\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\/106956_Wiring_diagram_1.jpg?v=1787311214\" alt=\"\"\u003e\u003c\/p\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/files.seeedstudio.com\/products\/100069114\/res\/RS485%20Carbon%20Monoxide%20CO%20Sensor%20User%20Manual.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 Carbon Monoxide CO 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":56151939121537,"sku":"106956","price":152.6,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/rs485-carbon-monoxide-co-sensor-seeed-106956-1255427102.jpg?v=1787324320","url":"https:\/\/thepihut.com\/products\/rs485-carbon-monoxide-co-sensor","provider":"The Pi Hut","version":"1.0","type":"link"}