Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | ENS160 (Multi-gas) + AHT20 (Temp/Humidity) |
| Detected Gases | CO2 (eCO2), TVOC, Temperature, Humidity |
| Communication Interface | I2C and UART |
| Operating Voltage | 3.3V to 5V DC |
| TVOC Range | 0 to 65535 ppb |
| eCO2 Range | 400 to 65535 ppm |
| Temperature Accuracy | ±0.3°C |
| Humidity Accuracy | ±2% RH |
| Board Dimensions | 24mm x 18mm x 3mm |
| Application | Indoor Air Quality Monitoring, HVAC Systems |
Anonymous
Mar 27, 2026
Rating: 5/5
Excellent for plant monitoring
Using this to monitor air quality in my indoor greenhouse. It helps me know when to increase ventilation. The temperature and humidity readings match my standalone hygrometer perfectly.
Anonymous
Mar 24, 2026
Rating: 5/5
Easy to integrate
Documentation was clear enough to get started quickly. The combination of gas sensing and environmental monitoring on one small board saves a lot of space.
Anonymous
Mar 24, 2026
Rating: 5/5
Best compact air quality sensor
I have tried several modules, and this ENS160+AHT20 combo offers the best balance of features and size. The UART option is a nice backup if I2C pins are scarce.
Anonymous
Mar 15, 2026
Rating: 4/5
Good value, needs calibration time
Great sensor for the price. Just remember to let it run for a few days in a well-ventilated area before trusting the baseline values. The humidity sensor is quite accurate.
Anonymous
Mar 15, 2026
Rating: 5/5
Perfect for my smart home project
This module works flawlessly with my ESP32 setup. The I2C communication is stable, and the data readings for TVOC and eCO2 seem very responsive to changes in the room.
Anonymous
Mar 05, 2026
Rating: 4/5
Solid performance
The sensor is reliable. I deducted one star because the initial burn-in period took longer than expected, but once calibrated, it provides consistent data.
Q: What is the warm-up time required before accurate readings?
A: For optimal accuracy, the sensor should be powered on for at least 72 hours in a clean air environment to establish a proper baseline, though preliminary data is available sooner.
Q: Is the library compatible with Arduino IDE?
A: Yes, there are several open-source libraries available for Arduino IDE that support both the ENS160 and AHT20 sensors on this combined module.
Q: Does this module require an external pull-up resistor for I2C?
A: The module typically includes onboard pull-up resistors, but we recommend checking your specific microcontroller requirements. In most standard setups, it works plug-and-play.
Q: What is the maximum cable length for the I2C connection?
A: For standard I2C speeds, we recommend keeping cables under 30cm without bus extenders. For longer distances, consider using an I2C buffer or switching to the UART interface.
Q: Can this detect actual CO2 or only estimated CO2?
A: This module uses the ENS160 which provides eCO2 (equivalent CO2). It calculates CO2 levels based on VOC patterns and does not use an NDIR method for direct CO2 measurement.
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