Product Parameters Parameters​

​​Supply Voltage:​​ 1.7V-3.6V DC (Wide Voltage Compatible)

​​Detected es:​​ VOC (0-1000 ppm Ethanol Equivalent), NOx (0-10 ppm Nitrogen Dioxide Equivalent)

​​Operating Current:​​ 3.0mA Average, 3.4mA Peak

​​Interface:​​ I²C Digital Output (16-bit Raw Data + VOC/NOx Index)

​​Response Time:​​ VOC

​​Operating Temperature:​​ -20°C to +55°C

​​Humidity Compensation:​​ On-Chip Integration

​​🔌 Pin Functions ( )​​

​​VDD:​​ Power Input (1.7V-3.6V DC). Connect to System Regulated Output.

​​GND:​​ Power Ground. Must Share Common Ground with Controller.

​​SCL:​​ I²C Clock Line. Connect to MCU Clock Pin (e.g., ESP32 GPIO16).

​​SDA:​​ I²C Data Line. Connect to MCU Data Pin (e.g., ESP32 GPIO17).

​​SEL:​​ I²C Address Select (Default Ground, Address 0x59).

​​INT:​​ Interrupt Output (Triggered on Pollution Threshold Exceedance).

​​🌟 Key Features​​

​​Dual Detection:​​ Single-chip integration for VOC and NOx sensing with Sensirion's index algorithm, enabling automatic control of air purifiers without user programming.

​​Energy-Efficient:​​ Auto-shutdown after pollutant removal saves power.

​​Long Lifespan:​​ >10 years operation with low drift, Suitable for continuous monitoring.

​​Compact Design:​​ Ultra-small DFN package (2.44mm²) for space-constrained applications.

​​❓ FAQ​​

1.
​​Sensor Reading Drift?​​

→ Perform calibration every 6 months; avoid high-temperature/humidity Settings; utilize on-chip humidity compensation.

2.
​​Cross- Interference?​​

→ Enable Sensirion index algorithm to separate VOC/NOx signals; avoid installation near alcohol/detergent sources.