{"product_id":"in-duct-mount-co2-transmitter","title":"In-Duct Mount CO2 Transmitter","description":"\u003ch1\u003eIn-Duct Mount CO2 Transmitter provides precise real-time monitoring of carbon dioxide levels within air ducts, with optional temperature and relative humidity sensing for comprehensive air quality analysis.\u003c\/h1\u003e\n\u003cp data-end=\"608\" data-start=\"103\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cb\u003eNote: All Tongdy monitors and controls ship direct from the factory. Please allow 10-15 business days for shipping and handling.\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIts specially designed waterproof sensor probe with a porous film ensures easy installation and reliable operation in duct environments. Featuring an easy-to-read LCD display, the unit offers one to three configurable 0-10V or 4-20mA linear outputs. Users can adjust the CO2 measurement range via Modbus RS485 and configure inverse proportional outputs to suit diverse HVAC control applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal time\u003c\/strong\u003e carbon dioxide detection in air duct\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh accuracy\u003c\/strong\u003e temperature and relative humidity\u003cbr\u003ewith extendable air probe into air duct\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater-proof and porous film\u003c\/strong\u003e around the sensor probe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 3 analog linear outputs\u003c\/strong\u003e for 3 measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModbus RS485 interface\u003c\/strong\u003e for 4 measurements\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003cstrong\u003eAvailable with or without LCD display\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cdiv class=\"fl-builder-content fl-builder-content-2318 fl-builder-content-primary fl-builder-global-templates-locked\" data-post-id=\"2318\"\u003e\n\u003cdiv class=\"fl-row fl-row-full-width fl-row-bg-none fl-node-61c91ddb669f9\" data-node=\"61c91ddb669f9\"\u003e\n\u003cdiv class=\"fl-row-content-wrap\"\u003e\n\u003cdiv class=\"fl-row-content fl-row-full-width fl-node-content\"\u003e\n\u003cdiv class=\"fl-col-group fl-node-61c91ddb66a36\" data-node=\"61c91ddb66a36\"\u003e\n\u003cdiv class=\"fl-col fl-node-61c91ddb66a73 fl-col-has-cols\" data-node=\"61c91ddb66a73\"\u003e\n\u003cdiv class=\"fl-col-content fl-node-content\"\u003e\n\u003cdiv class=\"fl-col-group fl-node-61c91ddb66ab1 fl-col-group-nested\" data-node=\"61c91ddb66ab1\"\u003e\n\u003cdiv class=\"fl-col fl-node-61c91ddb66ae8\" data-node=\"61c91ddb66ae8\"\u003e\n\u003cdiv class=\"fl-col-content fl-node-content\"\u003e\n\u003cdiv class=\"fl-module fl-module-rich-text fl-node-61c91ddb66b64\" data-node=\"61c91ddb66b64\" data-animation-delay=\"0.0\"\u003e\n\u003cdiv class=\"fl-module-content fl-node-content\"\u003e\n\u003cdiv class=\"fl-rich-text\"\u003e\n\u003cdiv class=\"table_wrap\"\u003e\n\u003ctable style=\"width: 100%; height: 739px;\" border=\"1\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 38px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eMonitoring Parameters\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 38px;\" valign=\"top\" width=\"192\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003eCO\u003c\/b\u003e\u003cb\u003e2\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 28.62254%; height: 38px;\" valign=\"top\" width=\"165\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003eTemperature\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 17.889088%; height: 38px;\" valign=\"top\" width=\"141\"\u003e\n\u003cb\u003eRelative Humidity\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 57px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 57px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eSensing element\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 57px;\" valign=\"top\" width=\"192\"\u003eNon-Dispersive Infrared Detector (NDIR)\u003c\/td\u003e\n\u003ctd style=\"width: 46.511628%; height: 57px;\" colspan=\"2\" valign=\"top\" width=\"306\"\u003eDigital combined temperature and humidity sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 108px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 108px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eMeasuring range\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 108px;\" valign=\"top\" width=\"192\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e0~2000ppm(default) 0~5000ppm\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e(selectable in the order)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 28.62254%; height: 108px;\" valign=\"top\" width=\"165\"\u003e0℃~50℃(32℉~122℉) (default)\u003c\/td\u003e\n\u003ctd style=\"width: 17.889088%; height: 108px;\" valign=\"top\" width=\"141\"\u003e0~100%RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 35px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eDisplay Resolution\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 35px;\" valign=\"top\" width=\"192\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e1ppm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 28.62254%; height: 35px;\" valign=\"top\" width=\"165\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e0.1℃\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 17.889088%; height: 35px;\" valign=\"top\" width=\"141\"\u003e0.1%RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 38px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eAccuracy @25\u003c\/b\u003e\u003cb\u003e℃ \u003c\/b\u003e\u003cb\u003e(77\u003c\/b\u003e\u003cb\u003e℉\u003c\/b\u003e\u003cb\u003e)\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 38px;\" valign=\"top\" width=\"192\"\u003e±60ppm + 3% of reading\u003c\/td\u003e\n\u003ctd style=\"width: 28.62254%; height: 38px;\" valign=\"top\" width=\"165\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e±0.5℃ (0℃~50℃)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 17.889088%; height: 38px;\" valign=\"top\" width=\"141\"\u003e±3%RH (20%-80%RH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 35px;\" valign=\"top\" width=\"152\"\u003e\n\u003cp align=\"center\" style=\"text-align: left;\"\u003e\u003cb\u003eLifetime\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 35px;\" valign=\"top\" width=\"192\"\u003e15 years (normal)\u003c\/td\u003e\n\u003ctd style=\"width: 46.511628%; height: 35px;\" colspan=\"2\" valign=\"top\" width=\"306\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e10 years\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 38px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eCalibration cycle\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 38px;\" valign=\"top\" width=\"192\"\u003eABC Logic Self Calibration\u003c\/td\u003e\n\u003ctd style=\"width: 28.62254%; height: 38px;\" valign=\"top\" width=\"165\"\u003e\n\u003cp align=\"center\"\u003e——\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 17.889088%; height: 38px;\" valign=\"top\" width=\"141\"\u003e\n\u003cp align=\"center\"\u003e——\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 38px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eResponse Time\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 25.044723%; height: 38px;\" valign=\"top\" width=\"192\"\u003e\u0026lt;2 minutes for 90% change\u003c\/td\u003e\n\u003ctd style=\"width: 46.511628%; height: 38px;\" colspan=\"2\" valign=\"top\" width=\"306\"\u003e\u0026lt;10 seconds to reach 63%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eWarm up time\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003e2 hours (first time)2 minutes (operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35px;\"\u003e\n\u003ctd style=\"width: 100%; height: 35px;\" colspan=\"4\" valign=\"top\" width=\"651\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e\u003cb\u003eElectrical Characteristics\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003ePower supply\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003e24VAC\/VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eConsumption\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003e3.5 W max. ; 2.5 W avg.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 57px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 57px;\" valign=\"top\" width=\"152\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e\u003cb\u003eOutputs\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 57px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003eTwo or three analog outputs0~10VDC(default) or 4~20mA (selectable by jumpers) 0~5VDC (selected at place the order)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 38px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eModbus RS485 interface (optional)\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 38px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003eRS-485 with Modbus protocol, 19200bps rate, 15KV antistatic protection, independent base address\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35px;\"\u003e\n\u003ctd style=\"width: 100%; height: 35px;\" colspan=\"4\" valign=\"top\" width=\"651\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e\u003cb\u003eConditions of Using and Installation\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eOperation conditions\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003e0~50℃(32~122℉); 0~95%RH, non condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eStorage conditions\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003e0~50℃(32~122℉)\/ 5~80%RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 35px;\" valign=\"top\" width=\"152\"\u003e\n\u003cp style=\"text-align: left;\" align=\"center\"\u003e\u003cb\u003eWeight\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 35px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003e320g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eInstallation\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003eFixed on the air duct with 100mm installation hole size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\u003cb\u003eIP class (housing)\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003eIP50 for no LCD IP40 for with LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 28.443649%; height: 19px;\" valign=\"top\" width=\"152\"\u003e\n\u003cb\u003eStandard\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 71.556351%; height: 19px;\" colspan=\"3\" valign=\"top\" width=\"499\"\u003eCE-Approval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eDownloads\u003c\/h4\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0356\/8248\/4360\/files\/850001E-i.pdf?v=1651255080\" target=\"_blank\"\u003e \u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0356\/8248\/4360\/files\/TG9_CO2_Duct_Transmitter_datasheet-2402.pdf\" title=\"In-Duct Mount CO2 Transmitter Datasheet\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0356\/8248\/4360\/files\/pdf-icon-63x63_480x480.png?v=1598991821\" style=\"float: left;\" alt=\"PDF\"\u003e \u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0356\/8248\/4360\/files\/850001E-i.pdf?v=1651255080\" target=\"_blank\"\u003e\u003cbr\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0356\/8248\/4360\/files\/TG9_CO2_Duct_Transmitter_datasheet-2402.pdf\" title=\"In-Duct Mount CO2 Transmitter Datasheet\" rel=\"noopener\" target=\"_blank\"\u003eIn-Duct Mount CO2 Transmitter Datasheet\u003c\/a\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\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":"Tongdy","offers":[{"title":"Default Title","offer_id":51823697658040,"sku":"TG9-108-02","price":354.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/3735\/0584\/files\/TD-G09-O3-3111-B50-_5.jpg?v=1759252657","url":"https:\/\/sperscientific.com\/products\/in-duct-mount-co2-transmitter","provider":"Sper Scientific Instruments","version":"1.0","type":"link"}