ENS160 + AHT20 CO2 TVOC air quality, temperature and humidity module

Key Features

• Dual-sensor integration: gas + environmental sensing

• Measures eCOâ‚‚, TVOC, temperature, and humidity

• Fast startup and low power consumption

• Accurate and stable performance over a wide environmental range

• Compact design for embedded and mobile applications

• Compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers

Specifications

🔹 Gas Sensor: ENS160

• Detected Gases: Toluene, hydrogen, ethanol, nitrogen dioxide, ozone, and more

• Sensing Elements: Four independent MOX gas sensors

• Output: IAQ (Indoor Air Quality), eCOâ‚‚, TVOC, and AQI (Air Quality Index)

• Communication Interface: I²C and SPI

• Detection Range: 0–65,535 ppb

• Operating Voltage:

  • VDD: 1.71–1.98V

  • VDDIO: 1.71–3.6V

• Warm-up Time: < 1 minute

• Start-up Time: < 60 minutes

• Operating Temp: -40°C to +85°C

• Humidity Range: 5% to 95% RH

🔹 Temperature & Humidity Sensor: AHT21

• Voltage Supply: 2.0V–5.5V

• Temperature Range: -40°C to +120°C

• Humidity Range: 0%–100% RH

• Temperature Accuracy: ±0.3°C

• Humidity Accuracy: ±2% RH

• Resolution:

  • Temp: 0.01°C

  • Humidity: 0.024% RH

• Output Interface: I²C

Applications

• Smart home air quality monitoring

• IoT-based climate and gas sensing platforms

• HVAC system optimization and control

• Indoor AQI dashboards and displays

• Air purifiers and intelligent ventilation systems

• Environmental sensing in schools and public spaces

• Industrial safety and building management systems (BMS)

• Smart agriculture and greenhouse automation