HomeProductsAmbient SensorsTVOC eCO2 AQI Sensor with Modbus Output

TVOC eCO2 AQI Sensor with Modbus Output

Key Features

  • Measures eTVOC, eCO2, AQI-U, AQI-S, temperature, humidity, and dew point
  • Integrated ENS161 gas sensor based on MOX technology
  • eTVOC measurement range 0 to 65000 ppb
  • eCO2 measurement range 400 to 65000 ppm
  • AQI-U output range 1 to 5 for indoor air quality level
  • AQI-S output range 0 to 500 for relative air quality trend
  • Temperature measurement range -40 to 125°C
  • Humidity measurement range 0 to 100% RH
  • Built-in temperature and humidity compensation
  • Optional RS485 Modbus RTU or SDI-12 V1.3 output
  • Three operating modes: standard, low power, and ultra-low power
  • Low power design for battery-powered monitoring systems
  • Wide 5 to 28 V DC power input
  • Compact wall-mounted housing for easy installation
  • Surge protection on communication interface
  • Reverse power protection and lightning protection
  • Default 2 m cable with custom cable length available
  • ODM and OEM customization support

Product Description

1. Description

JWGas-VOC(Z16) TVOC eCO2 Air Quality Sensor is a compact indoor air quality monitoring sensor designed for HVAC systems, building automation, air purifiers, demand-controlled ventilation, and laboratory environmental monitoring. Based on MOX gas sensing technology and an integrated ENS161 gas sensor, it measures equivalent TVOC, equivalent CO2, AQI-U, AQI-S, temperature, humidity, and dew point.

With optional RS485 Modbus RTU or SDI-12 V1.3 digital output, low power operation modes, temperature and humidity compensation, and wall-mounted installation, this sensor is ideal for IoT-based indoor air quality monitoring and smart building integration.

2. Product Overview

JWGas-VOC(Z16) TVOC eCO2 Air Quality Sensor is designed for continuous indoor air quality monitoring and digital environmental data acquisition. It can detect a wide range of volatile organic compounds, including ethanol, toluene, hydrogen, and oxidizing gases, and uses intelligent algorithms to calculate eTVOC, eCO2, and multiple air quality index outputs.

The sensor is suitable for smart buildings, HVAC systems, indoor air quality monitoring, demand-controlled ventilation, air purification equipment, home appliances, and laboratory applications. Its RS485 Modbus RTU and SDI-12 output options make it easy to integrate with data loggers, IoT gateways, building automation systems, and cloud monitoring platforms.

According to the supplier manual, the sensor supports SDI-12 V1.3 or RS485 Modbus RTU, 5–28 V DC power input, IP50 protection, wall-mounted installation, default 2 m cable length, and a compact sensor body size of 111 × 25.5 mm.

Parameter
Model No JWGas-VOC(Z16)
Sensing Technology MOX metal oxide gas sensing
Integrated Gas Sensor ENS161
Measurement Parameters eTVOC, eCO2, AQI-U AQI-S, temperature, humidity, dew point
eTVOC Range 0–65000 ppb
eTVOC Resolution 1 ppb
eTVOC Typical Accuracy ±15% of measured value
eCO2 Range 400–65000 ppm
eCO2 Resolution 1 ppm
eCO2 Typical Accuracy ±20% of measured value
AQI-U Range 1–5
AQI-S Range 0–500
Temperature Range -40 to 125°C
Long-Term Operating Temperature -40 to 80°C
Temperature Resolution 0.01°C
Typical Temperature Accuracy Up to ±0.2°C
Humidity Range 0–100% RH
Humidity Resolution 0.01% RH
Typical Humidity Accuracy Up to ±1.8% RH
Working Environment -40 to 80°C, 0–95% RH non-condensing
Output Option 1 SDI-12 V1.3
Output Option 2 RS485 Modbus RTU
Power Supply 5–28 V DC
Protection Rating IP50
Installation Method Wall-mounted
Default Cable Length 2 m
Max Custom Cable Length 5 m
Sensor Body Size 111 × 25.5 mm
OEM ODM Available

3. Dimension

4. Application Scenarios

  • Indoor air quality monitoring
  • HVAC system monitoring
  • Building automation
  • Demand-controlled ventilation
  • Air purification systems
  • Smart home appliances
  • Kitchen hood and air purifier control
  • Laboratory environmental monitoring
  • Office and classroom air quality monitoring
  • Smart building
  • IAQ management
  • IoT-based environmental monitoring platforms
  • Data logging and remote air quality monitoring

FAQ

  • Q

    1. What does the JWGas-VOC(Z16) TVOC eCO2 Air Quality Sensor measure?

    A

    JWGas-VOC(Z16) sensor measures eTVOC, eCO2, AQI-U, AQI-S, temperature, humidity, and dew point for indoor air quality monitoring and HVAC control applications.

  • Q

    2. What is the eTVOC measurement range?

    A

    The eTVOC measurement range is 0 to 65000 ppb, with a resolution of 1 ppb.

  • Q

    3. What is the eCO2 measurement range?

    A

    The eCO2 measurement range is 400 to 65000 ppm, with a resolution of 1 ppm.

  • Q

    4. Does JWGas-VOC(Z16) support RS485 Modbus RTU?

    A

    Yes. JWGas-VOC(Z16) supports RS485 Modbus RTU, making it suitable for HVAC systems, building automation controllers, IoT gateways, PLC systems, and cloud monitoring platforms.

  • Q

    5. Can JWGas-VOC(Z16) work with SDI-12 data loggers?

    A

    Yes. JWGas-VOC(Z16) supports SDI-12 V1.3, allowing it to connect with data loggers and low-power environmental monitoring systems.

  • Q

    6. What is AQI-U?

    A

    AQI-U is an indoor air quality level output ranging from 1 to 5. It is designed to provide a simple air quality rating for indoor monitoring and ventilation control.

  • Q

    7. What is AQI-S?

    A

    AQI-S is a relative air quality index ranging from 0 to 500. It compares current air quality with the average air quality over the previous 24 hours.

  • Q

    8. Does the sensor measure temperature and humidity?

    A

    Yes. The sensor measures temperature from -40 to 125°C and humidity from 0 to 100% RH, with dew point output also available.

  • Q

    9. Is JWGas-VOC(Z16) suitable for battery-powered systems?

    A

    Yes. The sensor has a low-power design. The SDI-12 version has a static current of less than 2 mA @ 12 V DC, making it suitable for low-power monitoring applications.

  • Q

    10. What applications is this sensor suitable for?

    A

    It is suitable for indoor air quality monitoring, HVAC systems, building automation, demand-controlled ventilation, air purification systems, smart appliances, laboratories, offices, classrooms, and IoT monitoring platforms.

  • Q

    11. Can JWGas-VOC(Z16) be wall mounted?

    A

    Yes. JWGas-VOC(Z16) uses a compact wall-mounted design with a sensor body size of 111 × 25.5 mm, making it easy to install in indoor monitoring points.

  • Q

    12. Does JWGas-VOC(Z16) support OEM or ODM customization?

    A

    Yes. JWGas-VOC(Z16) supports OEM and ODM customization, including communication interface, cable length, labeling, and system integration requirements.

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