RS485 VOC, NOx, Temperature and Humidity Sensor: Modbus RTU, Indoor Air Quality Monitoring, VOC and NOx Index, Temperature, Humidity and Dew Point Measurement

The RS485 VOC, NOx, Temperature & Humidity Sensor (S-AQI-01A) is a compact multi-parameter air quality sensor designed for indoor environment monitoring. Built with the Sensirion SGP41 sensor, it accurately measures VOC and NOx indexes while providing temperature, humidity, and dew point readings for comprehensive air quality analysis. With 1-second measurement updates, the sensor provides real-time air quality data for monitoring and control systems. It supports RS485 Modbus RTU communication and a wide 5–28 V DC power input, making it easy to integrate into air purifiers, HVAC systems, and other smart environmental monitoring solutions. The IP50 wall-mounted enclosure supports flexible installation, while built-in surge, reverse polarity, TVS, and ESD protection ensure stable operation in various applications. Ideal for indoor air quality monitoring, scientific research, laboratories, warehouses, cold chain facilities, and demand-controlled ventilation systems.