DFRobot Gravity: AHT20 Temperature and Humidity Sensor

SKU: rz2439998
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  1. Brand: DFRobot
  2. Product: Gravity AHT20 Temperature and Humidity Sensor
  3. Operating Voltage: DC 2V-5V
  4. Output Signal: I2C
  5. I2C Address: 0x38
  6. Dimension: 30mm×20.5mm/1.18×0.81″
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The AHT20 is a high-precision but low-cost temperature and humidity sensor, which is equipped with an improved MEMS semiconductor capacitive humidity sensor element. It features a standard I2C interface and a wide voltage supply of 2V-5V. And with the simple peripheral circuit, it performs stably even in harsh environments in the measuring range of -40℃ ~ +85℃.

This sensor can be widely used for measuring the environmental temperature and humidity of home electronic equipment, the temperature and humidity of automobiles, and so on.


  1. Digital output, I2C interface
  2. Excellent long-term stability
  3. Fast response, strong anti-interference, and adaptability
  4. Gravity interface, simple wiring, no soldering required


  1. Operating Voltage: DC2V-5V
  2. Output Signal: I2C
  3. I2C Address: 0x38
  4. Dimension: 30mm×20.5mm/1.18×0.81″
  5. Resolution: 0.024 %RH
  6. Accuracy Error: ±2 %RH
  7. Repeatability: ±0.1 %RH
  8. Hysteresis: ±1 %RH
  9. Non-linear: ±0.1 %RH
  10. Response Time: 8S
  11. Operating Range: 0~100 %RH
  12. Long-term Drift: <0.5 %RH/yr
  13. TEMP Resolution: 0.01℃
  14. TEMP Accuracy Error: ±0.3℃
  15. TEMP Repeatability: ±0.1℃
  16. Hysteresis: ±0.1℃
  17. Response Time: minimum 5S, maximum 30S
  18. Operating Range: -40℃~85℃
  19. Long-term Drift: <0.04℃/yr

Package Includes:

1 x DFRobot Gravity AHT20 Temperature and Humidity Sensor