{"product_id":"desktop-tvoc-indoor-air-quality-monitor","title":"Desktop TVOC Indoor Air Quality Monitor","description":"\u003ch1\u003eThis desktop VOC monitor offers real-time detection of indoor mixed gases with high sensitivity to total volatile organic compounds (TVOC).\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\u003eIt simultaneously displays temperature and humidity, providing a comprehensive overview of indoor air conditions. The device features a three-color backlit LCD that clearly indicates air quality levels, accompanied by a selectable buzzer alarm for immediate alerts. An optional on\/off output allows integration with a ventilator for automated air control, and an RS485 interface is available for advanced connectivity. Its intuitive display and warning system enable precise air quality management to maintain a healthy environment. The unit includes a handheld remote controller for parameter setup and additional functionality.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"177\" data-end=\"287\"\u003e\n\u003cp data-start=\"179\" data-end=\"287\"\u003e\u003cstrong\u003eReal-time monitoring of TVOC, temperature and humidity\u003c\/strong\u003e for complete indoor air quality insight\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"288\" data-end=\"382\"\u003e\n\u003cp data-start=\"290\" data-end=\"382\"\u003e\u003cstrong\u003eBuilt-in semiconductor mixed-gas sensor\u003c\/strong\u003e with 5-year lifespan for long-term reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"288\" data-end=\"382\"\u003e\n\u003cp data-start=\"290\" data-end=\"382\"\u003e\u003cstrong\u003eDetects a wide range of harmful gases\u003c\/strong\u003e, including cigarette smoke, VOCs (formaldehyde, toluene), ethanol, ammonia, hydrogen sulfide, sulfur dioxide and more\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"547\" data-end=\"654\"\u003e\n\u003cp data-start=\"549\" data-end=\"654\"\u003e\u003cstrong data-start=\"549\" data-end=\"570\"\u003eClear LCD display\u003c\/strong\u003e shows current readings plus a one-hour moving average for accurate trend analysis\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"655\" data-end=\"766\"\u003e\n\u003cp data-start=\"657\" data-end=\"766\"\u003e\u003cstrong data-start=\"657\" data-end=\"687\"\u003eSix-color backlight system\u003c\/strong\u003e aligned with PM2.5 AQI standards for intuitive visual air quality indication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"767\" data-end=\"879\"\u003e\n\u003cp data-start=\"769\" data-end=\"879\"\u003e\u003cstrong data-start=\"769\" data-end=\"796\"\u003eThree-level color alarm\u003c\/strong\u003e (green\/orange\/red) with buzzer warning for quick response to poor air conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"880\" data-end=\"969\"\u003e\n\u003cp data-start=\"882\" data-end=\"969\"\u003e\u003cstrong\u003eProvides one relay output\u003c\/strong\u003e to control a ventilator or other air-handling equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"970\" data-end=\"1071\"\u003e\n\u003cp data-start=\"972\" data-end=\"1071\"\u003e\u003cstrong data-start=\"972\" data-end=\"1011\"\u003eOptional Modbus RS485 communication\u003c\/strong\u003e for seamless integration into building management systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1072\" data-end=\"1180\"\u003e\n\u003cp data-start=\"1074\" data-end=\"1180\"\u003e\u003cstrong data-start=\"1074\" data-end=\"1093\"\u003eFlexible design\u003c\/strong\u003e for desktop use or wall mounting in residential, commercial, and industrial settings\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1072\" data-end=\"1180\"\u003e\n\u003cstrong\u003eRemote control included\u003c\/strong\u003e for parameter setup and additional functionality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cdiv data-post-id=\"1879\" class=\"fl-builder-content fl-builder-content-1879 fl-builder-content-primary fl-builder-global-templates-locked\"\u003e\n\u003cdiv data-node=\"619f2e2811911\" class=\"fl-row fl-row-full-width fl-row-bg-none fl-node-619f2e2811911\"\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 data-node=\"619f2e2811dfe\" class=\"fl-col-group fl-node-619f2e2811dfe\"\u003e\n\u003cdiv data-node=\"619f2e2811e4e\" class=\"fl-col fl-node-619f2e2811e4e fl-col-has-cols\"\u003e\n\u003cdiv class=\"fl-col-content fl-node-content\"\u003e\n\u003cdiv data-node=\"619f2e2811e93\" class=\"fl-col-group fl-node-619f2e2811e93 fl-col-group-nested\"\u003e\n\u003cdiv data-node=\"619f2e2811ed6\" class=\"fl-col fl-node-619f2e2811ed6\"\u003e\n\u003cdiv class=\"fl-col-content fl-node-content\"\u003e\n\u003cdiv data-animation-delay=\"0.0\" data-node=\"619f2e2811f59\" class=\"fl-module fl-module-rich-text fl-node-619f2e2811f59\"\u003e\n\u003cdiv class=\"fl-module-content fl-node-content\"\u003e\n\u003cdiv class=\"fl-rich-text\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"table_wrap\"\u003e\n\u003ctable style=\"width: 100%; height: 688px;\" cellspacing=\"0\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 149px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 149px;\" width=\"201\" valign=\"top\"\u003e \n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eGas detection\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 149px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003e\n\u003cp align=\"justify\"\u003eHighly sensitive to many harmful gases, such as harmful gases from construction and decoration materials, VOCs (like toluene and formaldehyde); Cigarette smoke; Ammonia and H2S and other gases from household wastes; CO, SO2 from cooking and burning; Alcohol, Natural gas, detergent and other bad smells etc.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 38px;\" width=\"201\" valign=\"top\"\u003eSensing element\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 38px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003eSemiconductor mix gas sensor of long working life and good stability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eSignal update\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 19px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003e1s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eWarm up time\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 19px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003e72 hours (first time), 1 hour (normal operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eVOC measuring range\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 19px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003e1～30ppm ( 1ppm= 1 part per million\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eDisplay resolution\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 19px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003e0.1ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eVOC setting resolution\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 19px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003e0.1ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 38px;\" width=\"201\" valign=\"top\"\u003eTemperature \u0026amp; Humidity Sensor\u003c\/td\u003e\n\u003ctd style=\"width: 39.215686%; height: 38px;\" width=\"220\" valign=\"top\"\u003eTemperature\u003c\/td\u003e\n\u003ctd style=\"width: 43.315508%; height: 38px;\" width=\"243\" valign=\"top\"\u003eRelative Humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eSensing element\u003c\/td\u003e\n\u003ctd style=\"width: 39.215686%; height: 19px;\" width=\"220\" valign=\"top\"\u003eNTC 5K\u003c\/td\u003e\n\u003ctd style=\"width: 43.315508%; height: 19px;\" width=\"243\" valign=\"top\"\u003eCapacitive sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eMeasuring range\u003c\/td\u003e\n\u003ctd style=\"width: 39.215686%; height: 19px;\" width=\"220\" valign=\"top\"\u003e0~50℃\u003c\/td\u003e\n\u003ctd style=\"width: 43.315508%; height: 19px;\" width=\"243\" valign=\"top\"\u003e0 -95%RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 38px;\" width=\"201\" valign=\"top\"\u003eAccuracy\u003c\/td\u003e\n\u003ctd style=\"width: 39.215686%; height: 38px;\" width=\"220\" valign=\"top\"\u003e±0.5℃ (25℃, 40%-60%RH)\u003c\/td\u003e\n\u003ctd style=\"width: 43.315508%; height: 38px;\" width=\"243\" valign=\"top\"\u003e±4%RH (25℃, 40%-60%RH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eDisplay resolution\u003c\/td\u003e\n\u003ctd style=\"width: 39.215686%; height: 19px;\" width=\"220\" valign=\"top\"\u003e0.5℃\u003c\/td\u003e\n\u003ctd style=\"width: 43.315508%; height: 19px;\" width=\"243\" valign=\"top\"\u003e1%RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eStability\u003c\/td\u003e\n\u003ctd style=\"width: 39.215686%; height: 19px;\" width=\"220\" valign=\"top\"\u003e±0.5℃per year\u003c\/td\u003e\n\u003ctd style=\"width: 43.315508%; height: 19px;\" width=\"243\" valign=\"top\"\u003e±1%RH per year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 89px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 89px;\" width=\"201\" valign=\"top\"\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eOutput\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 89px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003e1xRelay output to control a ventilator or air-purifier,\n\u003cp\u003emax current 3A resistance（220VAC）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 38px;\" width=\"201\" valign=\"top\"\u003eWarning alarm\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 38px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003eInner buzzer alarm and also three colors backlit switch as well\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 19px;\" width=\"201\" valign=\"top\"\u003eBuzzer alarm\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 19px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003eAlarm starts when VOC value above 25ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 108px;\"\u003e\n\u003ctd style=\"width: 35.828877%; height: 108px;\" width=\"201\" valign=\"top\"\u003e\n\u003cb\u003e \u003c\/b\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLCD backlit\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 82.531194%; height: 108px;\" width=\"463\" valign=\"top\" colspan=\"2\"\u003eGreen—optimal air quality ► enjoy the air quality\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOrange—moderate air quality ► ventilation suggested Red—-poor air quality ► ventilation immediately\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table_wrap\"\u003e\n\u003ctable cellspacing=\"0\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eRS485 interface (optional)\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003eModbus protocol with 19200bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eOperating condition\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003e-20℃~60℃ (-4℉~140℉)\/ 0~ 95% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eStorage conditions\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003e0℃～50℃ (32℉～122℉)\/ 5~ 90% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003e190g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eDimensions\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003e130mm(L)×85mm(W)×36.5mm(H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eInstallation standard\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003eDesktop \u003cbr\u003e(65mm×65mm or 85mmX85mm or 2”×4” wire box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eWiring standard\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003eWire section area \u0026lt;1.5mm\u003csup\u003e2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003ePower supply\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003e24VAC\/VDC，230VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eConsumption\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003e2.8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eQuality System\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003eISO 9001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eHousing\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003ePC\/ABS fire-proof, IP30 protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"200\" valign=\"top\"\u003eCertificate\u003c\/td\u003e\n\u003ctd width=\"462\" valign=\"top\"\u003eCE\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\/G02-VOC-B3_datasheet-V.2311.pdf\" title=\"Desktop TVOC Indoor Air Quality Monitor 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\/G02-VOC-B3_datasheet-V.2311.pdf\" title=\"Desktop TVOC Indoor Air Quality Monitor Datasheet\" rel=\"noopener\" target=\"_blank\"\u003eDesktop TVOC Indoor Air Quality Monitor 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":51823697789112,"sku":"G02-VOC-B332C","price":261.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/3735\/0584\/files\/TD-G02-VOC-B332C_1.jpg?v=1758921008","url":"https:\/\/sperscientific.com\/products\/desktop-tvoc-indoor-air-quality-monitor","provider":"Sper Scientific Instruments","version":"1.0","type":"link"}