ENS160+AHT21 CO2, eCO2, TVOC, Temperature and Humidity Sensor Breakout Board

The ENS160+AHT21 sensor is a versatile digital multi-gas sensor specifically designed for measuring indoor air quality. It detects a variety of gases as well as volatile organic compounds (VOCs) including toluene, hydrogen, ethanol, NO2, and ozone. Thanks to integrated sensor fusion and automatic calibration, it delivers reliable and accurate results. With the I2C and SPI interfaces, it is easily integrated into various systems. Additionally, the AHT21 sensor accurately captures temperature and humidity values, making it ideal for home and building automation systems. It impresses with quick warm-up and high resistance to siloxanes and humidity. The compact design allows flexible application in demanding environments. With a warm-up time of under a minute and low power consumption, it is perfect for fast and energy-efficient measurement systems. 

Features:  

• The ENS160 detects both oxidizing gases like NO2 and reducing gases.  
• The sensor board supports up to four independent MOX gas sensors.  
• A pre-calibrated sensor and automatic baseline correction ensure high precision.  
• It delivers multiple IAQ outputs like TVOC, eCO2, and AQI.  
• Communication with systems is easy thanks to the I2C and SPI interfaces.  
• The warm-up time is less than a minute.  
• It features a start-up time of less than an hour.  

Application examples:  

• Monitoring air quality in living and working spaces  
• Integration into building automation systems for better environmental control  
• Use in air purifiers and air conditioners for gas detection  
• Monitoring temperature and humidity in smart home systems  
• Use in industrial measurement systems for VOC detection

Documentation:

• Instructables guide with ESP

Technical data:

• Sensor: ENS160, AHT21
• Measurable VOCs: Toluene, hydrogen, ethanol, NO2, and ozone
• Ambient temperature range: -40 °C to +85 °C  
• Humidity range: 5% to 95% RH  
• Supply voltage VIN: 5V
• Dimensions: 24 x 20 x 3 mm
• Weight: 3g

Scope of delivery:  

• 1x ENS160+AHT21 CO2, eCO2, TVOC, temperature, and humidity sensor breakout board  
• 1x pin header