Grove - AHT20 I2C Industrial Grade Temperature and Humidity Sensor


Grove AHT20 Temperature and Humidity sensor is an industrial-grade sensor based on AHT20.

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The color of the arrival PCB is blue!!! The Grove interface has already been soldered on the PCB. 

Key Features

  • Temperature measurement range -40 ~ 85°C, Humidity measurement range 0 ~ 100% RH
  • Digital output, Grove I2C interface
  • Excellent long-term stability
  • SMD package suitable for reflow soldering
  • Quick response and strong anti-interference ability
  • Compatible with Arduino
  • 4-pin interface reserved


Grove AHT20 Temperature and Humidity sensor is based on AHT20, compared with Grove - Temperature & Humidity Sensor Pro (AM2302/DHT22), AHT20 is a new generation of temperature and humidity sensor embedded with a dual-row flat and no-lead SMD package, suitable for the reflow soldering. AHT20 is equipped with a newly designed ASIC chip: an improved MEMS semiconductor capacitive humidity sensor, and a standard on-chip temperature sensor. The output is I2C protocol with the Grove interface.

The performance of AHT20 is more stable in harsh environments compared with the previous generation of temperature and humidity sensor,as a matter of fact, AHT20 is fittable in most industrial scenarios.


  • Operating Voltage: DC:2.0-5.5V
  • Measuring Range (humidity) 0 ~ 100% RH
  • Temperature Range: -40 ~ + 85 ℃
  • Humidity Accuracy: ± 2% RH (25 ℃)
  • Temperature Accuracy ± 0.3 ℃
  • Resolution: Temperature: 0.01 ℃, Humidity: 0.024% RH
  • Output Interface: Grove I²C Interface
  • I2C address: 0x38


  • 24x20x12(mm)

What is Grove?

Grove makes it easier to connect, experiment, and simplify the prototyping process. No jumpers or soldering required. We have developed more than 300 Grove modules, covering a wide range of applications that can fulfill a variety of needs. Not only are these open hardware, but we also have open-source software.

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Also, check our blog 9 Types of Temperature Sensors You Should Know to compare different temperature sensors for your next environmental project! 


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