ENS160 AHT21 Air Quality CO2 Temperature Humidity Sensor Arduino

The ENS160 AHT21 is a modern air quality CO2 sensor designed for monitoring indoor air in homes and buildings. This digital multi-gas sensor perfectly detects various gases and volatile organic compounds (VOCs), including toluene, hydrogen, ethanol, NO2, and ozone. The air quality CO2 sensor is used for home automation, building management, household appliances, and air purification. It is an ideal solution for those who want to monitor indoor air conditions and ensure a healthier environment for their family or office.

Air quality sensor CO2 - main features

• Multi-gas sensing — detects reducing (VOC) and oxidizing gases (NO2), toluene, hydrogen, ethanol, and ozone. Provides comprehensive information about indoor air pollution and composition.
• Integrated sensor calibration — features a pre-calibrated sensor fusion system and an automatic baseline correction algorithm. No manual setup is required; the sensor works immediately after power-on.
• Multiple IAQ outputs — provides TVOC, eCO2, and Air Quality Level (AQL). The user can choose the most suitable standard for their needs.
• Fast heating time — less than 1 minute heating and less than 1 hour startup time. The sensor starts measuring accurately quickly after power-on.
• I2C and SPI interface — easy to integrate with Arduino and other microcontrollers. No complex software library required, saving processing time resources.
• Siloxane and humidity resistance — the sensor works reliably even in humid environments and withstands siloxane impurities. Suitable for use in various climatic conditions for a long time.
• Flexible and reliable construction — safe for daily use in homes and commercial facilities. Ensures stable operation in various usage scenarios.

Technical specifications

• Model: ENS160 + AHT21
• Operating temperature: -40 to +85 °C
• Relative humidity: 5 to 95% RH
• Supply voltage (VDD): 1.71 to 1.98 V
• Interface: I2C and SPI
• Heating time: < 1 minute
• Startup time: < 1 hour
• Independent sensors: up to 4
• Resistance: to siloxanes and humidity

Who is it suitable for and how to use it?

CO2 air quality sensor designed for those using the Arduino platform for home automation projects. Suitable for home air recovery systems, air purifiers, heating and ventilation systems (HVAC). Practical tip: connect the sensor to Arduino via the I2C interface, set up the program, read data from the sensor, and control household appliances based on air quality. This sensor is ideal for smart home and office automation.

Buyer questions

Q: Does the ENS160 sensor replace the CCS811?
Yes, the ENS160 is a more advanced replacement for the CCS811. It has better calibration, measures CO2 and VOC more accurately, and works quickly after power-on. Compatible with the same Arduino projects, but with better performance and reliability.

Q: Does the sensor require special maintenance?
No, the sensor requires almost no maintenance. Keep away from water, heat sources, and mechanical damage. Periodically check the connection. The sensor is resistant to humidity and siloxanes, so it will work for a long time without problems.

Q: What is the delivery time and is there a warranty?
Delivery time depends on your location — usually 5-14 days. The product has a manufacturer's warranty and the TopSmart store return policy. If you have any problems, please contact our customer service.

CO2 air quality sensor ENS160 AHT21 — a great choice for those who want to monitor indoor air and create the smartest home control systems. Safe, accurate, and easy to integrate with Arduino platforms.

Sources: Air quality index | TopSmart store