{"product_id":"wall-mounted-tvoc-air-quality-transmitter-sensor-rs485","title":"Wall-Mounted TVOC Air Quality Sensor RS485 Transmitter","description":"\n\u003ch2\u003eWall-Mounted TVOC Air Quality Transmitter with RS485 Interface\u003c\/h2\u003e\n\u003cp\u003eMonitor the air quality in your indoor spaces with precision using this high-accuracy \u003cstrong\u003eTVOC (Total Volatile Organic Compound) Sensor Transmitter\u003c\/strong\u003e. Featuring a robust RS485 output interface, wide measurement range, and a sleek wall-mounted design, this detector is ideal for offices, factories, laboratories, smart buildings, and HVAC systems that require continuous, reliable indoor air quality data.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide TVOC Measurement Range:\u003c\/strong\u003e 0–60,000 ppb — captures trace to high concentrations of volatile organic compounds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Accuracy:\u003c\/strong\u003e Typical accuracy of 8% FS (@C2H6O, 0.5 ppm, 25°C, 50% RH) for dependable readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRS485 Output Signal:\u003c\/strong\u003e Industry-standard communication for seamless integration with PLCs, BMS, SCADA, and automation systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Operating Range:\u003c\/strong\u003e Functions reliably from -40°C to +85°C and 0%–95% RH — suitable for demanding environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Only 0.5W (RS485) \/ 0.4W (analog) — energy-efficient continuous operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Data Refresh:\u003c\/strong\u003e 2-second analog data refresh time for near real-time monitoring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWall-Mounted Installation:\u003c\/strong\u003e Clean, professional installation that fits seamlessly into any indoor setting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Plastic housing designed for long-term, stable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n      \u003cth style=\"border:1px solid #ccc; padding:8px; text-align:left;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"border:1px solid #ccc; padding:8px; text-align:left;\"\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eOutput Signal\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eDC 10–30V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eMax Power Consumption\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e0.5W (RS485) \/ 0.4W (Analog)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e-40°C ~ +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eWorking Humidity\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e0% RH ~ 95% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eTVOC Measurement Range\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e0–60,000 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eMeasurement Object\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eVolatile Organic Compounds (VOCs)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eData Refresh Time\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e2 seconds (analog)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eAccuracy\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e8% FS (@C2H6O, 0.5 ppm, 25°C, 50% RH)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eInstallation Method\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eWall-Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003ePreheating Time\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e\u0026lt;24 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eVoltage Output Load\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eOutput resistance ≤250Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eCurrent Output Load\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003e≤600Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003eHousing Material\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc; padding:8px;\"\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × TVOC Sensor \/ Air Quality Transmitter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart building and HVAC air quality management\u003c\/li\u003e\n  \u003cli\u003eIndustrial facility and warehouse monitoring\u003c\/li\u003e\n  \u003cli\u003eOffice and commercial indoor environment control\u003c\/li\u003e\n  \u003cli\u003eLaboratory and cleanroom VOC tracking\u003c\/li\u003e\n  \u003cli\u003eBMS \/ SCADA integration via RS485\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on indoor air quality standards and volatile organic compounds, visit the \u003ca href=\"https:\/\/www.epa.gov\/indoor-air-quality-iaq\/volatile-organic-compounds-impact-indoor-air-quality\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEPA's Indoor Air Quality resource on Volatile Organic Compounds\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does a TVOC sensor measure and why is it important for indoor air quality?\u003c\/h4\u003e\n\u003cp\u003eA: A TVOC (Total Volatile Organic Compound) sensor measures the cumulative concentration of volatile organic compounds in the air, expressed in ppb (parts per billion). VOCs are emitted by paints, cleaning products, furniture, adhesives, and many other common materials. Monitoring TVOC levels helps maintain a healthy and compliant indoor environment in offices, factories, and smart buildings.\u003c\/p\u003e\n\u003ch4\u003eQ: What communication protocol does this air quality transmitter use?\u003c\/h4\u003e\n\u003cp\u003eA: This TVOC transmitter uses the RS485 communication protocol, which is an industry-standard serial interface widely compatible with PLCs, building management systems (BMS), SCADA platforms, and data loggers. It supports reliable long-distance data transmission, making it ideal for professional installation scenarios.\u003c\/p\u003e\n\u003ch4\u003eQ: How is the TVOC sensor installed?\u003c\/h4\u003e\n\u003cp\u003eA: The sensor is designed for wall-mounted installation, making it easy to position at breathing height in any indoor space. It connects via DC power supply (10–30V) and communicates through the RS485 output. A preheating time of up to 24 hours is recommended before taking calibrated readings.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the measurement range of this TVOC detector?\u003c\/h4\u003e\n\u003cp\u003eA: This sensor covers a TVOC measurement range of 0 to 60,000 ppb, with a typical accuracy of 8% FS under standard conditions (0.5 ppm ethanol, 25°C, 50% RH). This wide range makes it suitable for both low-level monitoring and detecting elevated VOC concentrations in industrial or commercial environments.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does a TVOC sensor measure and why is it important for indoor air quality?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A TVOC (Total Volatile Organic Compound) sensor measures the cumulative concentration of volatile organic compounds in the air, expressed in ppb (parts per billion). 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