INFWIN DigiGas-VOC TVOC eCO2 and Air Quality Index Sensor

$ 119.00 USD

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INFWIN P/N DigiGAS-VOC-AAAB002

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SKU:123004240

Out of stock — Available on backorder

The INFWIN DigiGas-VOC is a multi-gas sensor with SDI-12 or RS485/Modbus-RTU output, built around an ENS161 metal-oxide (MOX) sensing element. It detects a wide range of volatile organic compounds (VOCs) - including ethanol, toluene, hydrogen, and oxidizing gases - and runs onboard algorithms to calculate equivalent TVOC (eTVOC), equivalent CO2 (eCO2), and two air quality indices. Power supply, output interface, connector type, and cable length are configurable via ordering code - the default variant (DigiGas-VOC-AAAB002) ships with default range/accuracy, RS485/Modbus-RTU output, 5–28V DC supply, a cold-pressed terminal connector, and a 2 m cable.

Alongside gas readings, the sensor reports air temperature, humidity, and dew point, with automatic temperature and humidity compensation applied to the gas outputs. Reverse power protection and built-in TVS/ESD protection are included.

Key Features

Integrated ENS161 multi-gas sensor: Metal-oxide (MOX) sensing for a broad range of VOCs
Multiple calculated outputs: eTVOC, eCO2, AQI-U (German UBA indoor air quality index), and AQI-S (relative air quality index)
Temperature and humidity compensated: Calibrated gas outputs account for ambient conditions
Integrated temperature, humidity, and dew point measurement
Digital output: SDI-12 (V1.3) for universal datalogger compatibility and low-power use, or RS485/Modbus-RTU for long cable runs or multi-sensor networks, both with built-in surge protection
Compact size: 111 × 25.5 mm sensor body
Reverse power protection: Built-in TVS/ESD protection
Connector options: Cold-pressed terminal or stripped & tinned lead wires
Configuration utility: SensorOneSet software (RS485) or SensorOneSetSDI12 software (SDI-12) included for sensor configuration
Excellent price-performance ratio
Cable length: 2 m standard; custom lengths available, up to 5 m maximum

Applications

Building automation - HVAC, indoor air quality, and demand-controlled ventilation
Home appliances, including cooker hoods, air cleaners, and purifiers
Laboratory applications
LoRaWAN IoT deployments via the Catena-5310 or compatible RS485/Modbus-RTU/SDI-12 gateway

Important Notes

eTVOC and eCO2 are equivalent/estimated values calculated by the sensor's onboard algorithm from VOC readings, not a direct measurement of CO2 or a single named compound.
Detailed eTVOC and eCO2 accuracy figures are provided in the user manual's Accuracy chapter rather than as a single headline number.
The temperature sensing element is rated to +125°C, but the long-term operating temperature for the sensor as a whole is −40°C to +80°C.
Custom cable lengths are limited to a maximum of 5 meters for this sensor.
IP50 rated - protected against dust ingress and some direct contact, but not rated for washdown, submersion, or outdoor exposure to rain.
Wall mounting installation only, in a non-condensing environment.

Specifications

eTVOC (Equivalent Total Volatile Organic Compounds)
Range	0–65000 ppb
Resolution	1 ppb
eCO2 (Equivalent CO2)
Range	400–65000 ppm
Resolution	1 ppm
Air Quality Index
AQI-U (German UBA indoor air quality index)	Range 1–5, resolution 1
AQI-S (relative air quality index)	Range 0–500, resolution 1
Temperature
Range	−40°C to +125°C (long-term operating range −40°C to +80°C)
Resolution	0.01°C
Typical accuracy	±0.2°C
Humidity
Range	0–100%
Resolution	0.01%
Typical accuracy	±1.8% RH
Electrical
Output interface	RS485 (Modbus-RTU) or SDI-12, V1.3 (selectable via ordering code)
Power supply	5–28V DC
Quiescent current (SDI-12)	<4 mA (1 sample/sec); <500 µA (1 sample/min); <400 µA (1 sample/5 min), all @ 12V DC
Quiescent current (RS485)	<7 mA (1 sample/sec); <4 mA (1 sample/min); <3.5 mA (1 sample/5 min), all @ 12V DC
Max. current during measurement	<15 mA @ 12V DC
Mechanical
Dimensions	111 × 25.5 mm (sensor body, length × diameter)
IP rating	IP50
Connector	Cold-pressed terminal or stripped & tinned lead wires (selectable via ordering code)
Cable length	2 m standard; custom length available, max 5 m
Installation	Wall mounting
Environmental
Operating conditions	−40°C to +80°C; 0–95% humidity, non-condensing

Ordering Code Guide

Code 1: Product Series	DigiGas-VOC	DigiGas-VOC, eTVOC, eCO2, AQI-U, AQI-S, air temperature, humidity sensor
Code 2: Range and Accuracy	A	Default (see specification table)
Code 3: Power Supply	A X	5–28V DC Customize
Code 4: Output Interface	A B	RS485 (Modbus-RTU) SDI-12
Code 5: Connector	B C	Cold-pressed terminal Stripped & tinned lead wires
Code 6: Cable Length	002 XXX	2 meters Custom (XXX = length in meters, max 5 m)

Default Variant: DigiGas-VOC-AAAB002

Measuring parameters	eTVOC, eCO2, AQI-U, AQI-S, air temperature, and humidity
Range and accuracy	Default
Power supply	5–28V DC
Output interface	RS485, Modbus-RTU
Connector	Cold-pressed terminal
Cable length	2 meters